Tootfinder

Baltimore city council to consider eliminating minimum parking rquirements. https://www.thebaltimorebanner.com/community/transportation/baltimore-parking-mandate-housin…

Baltimore eyes eliminating requirement for developers to build parking
A new bill before the Baltimore City Council would eliminate the requirement to provide a minimum amount of off-street parking for new development.

California Gov. Gavin Newsom
said the state is suing the Trump Administration
after Transportation Secretary Sean Duffy announced
his agency is clawing back $4 billion of federal funds
previously awarded for high-speed rail construction,
the latest challenge for the country’s costliest infrastructure project.
Duffy this week said the decision to take back funds awarded by the Federal Railroad Administration during the Obama and Biden Administrations
…

California Sues Trump To Hang Onto $4 Billion Of Bullet Train Funds
Gov. Gavin Newsom says the effort by the Transportation Department to claw back federal grants is politically motivated and based on Trump’s “animus” toward the state.

MPC-based Coarse-to-Fine Motion Planning for Robotic Object Transportation in Cluttered Environments
Chen Cai, Ernesto Dickel Saraiva, Ya-jun Pan, Steven Liu
https://arxiv.org/abs/2507.11211

MPC-based Coarse-to-Fine Motion Planning for Robotic Object Transportation in Cluttered Environments
This letter presents a novel coarse-to-fine motion planning framework for robotic manipulation in cluttered, unmodeled environments. The system integrates a dual-camera perception setup with a B-spline-based model predictive control (MPC) scheme. Initially, the planner generates feasible global trajectories from partial and uncertain observations. As new visual data are incrementally fused, both the environment model and motion planning are progressively refined. A vision-based cost function pr…

paris_transportation: Paris Transportation (2016)
A multiplex transportation network of Ile-de-France, jointly representing the road network, train network, and subway network. Nodes are intersections, rail stations or metro stations. Different modes of transportation are given by different layers. Within-layer edges represent direct transference by a particular mode of transportation, and between-layer edges represent the conjunction of those layers at that node.
This network ha…

It’s a mystery.

pySpainMobility: a Python Package to Access and Manage Spanish Open Mobility Data
Ciro Beneduce, Tania Gull\'on Mu\~noz-Repiso, Bruno Lepri, Massimiliano Luca
https://arxiv.org/abs/2506.13385

pySpainMobility: a Python Package to Access and Manage Spanish Open Mobility Data
Mobility patterns play a critical role in a wide range of societal challenges, from epidemic modeling and emergency response to transportation planning and regional development. Yet, access to high-quality, timely, and openly available mobility data remains limited. In response, the Spanish Ministry of Transportation and Sustainable Mobility has released daily mobility datasets based on anonymized mobile phone data, covering districts, municipalities, and greater urban areas from February 2020 …

Baltimore city council to consider eliminating minimum parking rquirements. https://www.thebaltimorebanner.com/community/transportation/baltimore-parking-mandate-housin…

RL-MoE: An Image-Based Privacy Preserving Approach In Intelligent Transportation System
Abdolazim Rezaei, Mehdi Sookhak, Mahboobeh Haghparast
https://arxiv.org/abs/2508.09186 ht…

RL-MoE: An Image-Based Privacy Preserving Approach In Intelligent Transportation System
The proliferation of AI-powered cameras in Intelligent Transportation Systems (ITS) creates a severe conflict between the need for rich visual data and the fundamental right to privacy. Existing privacy-preserving mechanisms, such as blurring or encryption, are often insufficient, creating an undesirable trade-off where either privacy is compromised against advanced reconstruction attacks or data utility is critically degraded. To resolve this impasse, we propose RL-MoE, a novel framework that …

Fuzzy location and allocation Hub Network Design for Air Cargo Transportation Considering Sustainability and Time Window
Ali Mohammad Malekdar, Mohsen Akbarpour Shirazi
https://arxiv.org/abs/2506.12064

Fuzzy location and allocation Hub Network Design for Air Cargo Transportation Considering Sustainability and Time Window
Hub location Problems seek to find hub facilities and assign non-hub nodes to them in such a way that the flow between origin and destination should be effectively established according to the desired goal. In general, in the literature of location, it is assumed that the time horizon of hub network design is a single time horizon. In the last two decades these problems have attracted special attention in the field of facility location problems and have wide applications in different fields inc…

FloGAN: Scenario-Based Urban Mobility Flow Generation via Conditional GANs and Dynamic Region Decoupling
Seanglidet Yean, Jiazu Zhou, Bu-Sung Lee, Markus Schl\"apfer
https://arxiv.org/abs/2507.12053

FloGAN: Scenario-Based Urban Mobility Flow Generation via Conditional GANs and Dynamic Region Decoupling
The mobility patterns of people in cities evolve alongside changes in land use and population. This makes it crucial for urban planners to simulate and analyze human mobility patterns for purposes such as transportation optimization and sustainable urban development. Existing generative models borrowed from machine learning rely heavily on historical trajectories and often overlook evolving factors like changes in population density and land use. Mechanistic approaches incorporate population de…

The Transportation Department is set to lose about 7 percent of its staff
because of the Trump administration’s deferred resignation offers,
according to data reviewed by POLITICO
— but some of its sub-agencies will be hit much harder.
The percentage of employees who accepted the administration’s
“fork in the road” offers
included 4.5 percent of the staff at the Federal Aviation Administration,
an agency facing increased scrutiny after January’s ma…

Full Canadian Transportation Agency decisions were #public, but legislative changes made most #confidential
https://www.…

I don't know what to say other than, Philly... I'm so sorry that this is happening
https://www.inquirer.com/transportation/septa-service-cuts-pa-state-budget-senate-funding-20250813.html

SEPTA cuts are moving forward, GM Scott Sauer says
As the Pa. state budget impasse continues, SEPTA says funding has not yet been allocated to forestall the cuts.

Competitive Online Transportation Simplified
Stephen Arndt, Benjamin Moseley, Kirk Pruhs, Marc Uetz
https://arxiv.org/abs/2508.08381 https://arxiv.org/pdf/…

Competitive Online Transportation Simplified
The setting for the online transportation problem is a metric space $M$, populated by $m$ parking garages of varying capacities. Over time cars arrive in $M$, and must be irrevocably assigned to a parking garage upon arrival in a way that respects the garage capacities. The objective is to minimize the aggregate distance traveled by the cars. In 1998, Kalyanasundaram and Pruhs conjectured that there is a $(2m-1)$-competitive deterministic algorithm for the online transportation problem, matchin…

GOLIATH: A Decentralized Framework for Data Collection in Intelligent Transportation Systems
Davide Maffiola, Stefano Longari, Michele Carminati, Mara Tanelli, Stefano Zanero
https://arxiv.org/abs/2506.10665

GOLIATH: A Decentralized Framework for Data Collection in Intelligent Transportation Systems
Intelligent Transportation Systems (ITSs) technology has advanced during the past years, and it is now used for several applications that require vehicles to exchange real-time data, such as in traffic information management. Traditionally, road traffic information has been collected using on-site sensors. However, crowd-sourcing traffic information from onboard sensors or smartphones has become a viable alternative. State-of-the-art solutions currently follow a centralized model where only the…

BattBee: Equivalent Circuit Modeling and Early Detection of Thermal Runaway Triggered by Internal Short Circuits for Lithium-Ion Batteries
Sangwon Kang, Hao Tu, Huazhen Fang
https://arxiv.org/abs/2506.13577

BattBee: Equivalent Circuit Modeling and Early Detection of Thermal Runaway Triggered by Internal Short Circuits for Lithium-Ion Batteries
Lithium-ion batteries are the enabling power source for transportation electrification. However, in real-world applications, they remain vulnerable to internal short circuits (ISCs) and the consequential risk of thermal runaway (TR). Toward addressing the challenge of ISCs and TR, we undertake a systematic study that extends from dynamic modeling to fault detection in this paper. First, we develop {\em BattBee}, the first equivalent circuit model to specifically describe the onset of ISCs and t…

Numerical investigation on solids settling in a non-Newtonian slurry inside a horizontal flume
Shubham Sharma, Somasekhara Goud Sontti, Wenming Zhang, Petr Nikrityuk, Xuehua Zhang
https://arxiv.org/abs/2507.11657

Numerical investigation on solids settling in a non-Newtonian slurry inside a horizontal flume
Slurry transportation is always crucial for many industrial processes. This study numerically investigates the settling behavior of multisize solid particles in a non-newtonian slurry inside a semicircular open channel (flume). The non-newtonian slurry is modelled using a three-dimensional (3D) unsteady Eulerian-Eulerian (E-E) model coupled with the Hershel-Bulkley (HB) rheological model. A detailed sensitivity analysis of drag models is performed to establish the solid-fluid interaction in the…

The US DOD announces OpenAI, Google, Anthropic, and xAI have won DOD contracts, each with a $200M ceiling, aimed at enabling agentic AI workflows and more (Deborah Sophia/Reuters)
https://www.reuters.com/business/autos-trans…

More frightening energy-use stats about AI, mostly reporting on the total energy use of GPT, which is pretty abstract, and makes it difficult to answer the question of what impact you yourself are having by using it.
A useful rule of thumb to remember is that the whole energy use per day of a person in a European country (including food, transportation, production etc.) is about 125 KWh if they don't live excessively. 1/n

Dynamic Less-Than-Truckload Transportation Planning in Hyperconnected Hub Networks with Multi-Carrier Operations
Tiankuo Zhang, Jingze Li, Benoit Montreuil
https://arxiv.org/abs/2506.10290

Dynamic Less-Than-Truckload Transportation Planning in Hyperconnected Hub Networks with Multi-Carrier Operations
Less-than-truckload (LTL) shipment is vital in modern freight transportation yet is in dire need of more efficient usage of resources, higher service responsiveness and velocity, lower overall shipping cost across all parties, and better quality of life for the drivers. The industry is currently highly fragmented, with numerous small to medium-sized LTL carriers typically operating within dedicated regions or corridors, mostly disconnected from each other. This paper investigates the large-scal…

Joint Optimization of Multi-UAV Deployment and 3D Positioning in Traffic-Aware Aerial Networks
Kamran Shafafi, Alaa Awad Abdellatif, Manuel Ricardo, Rui Campos
https://arxiv.org/abs/2506.13287

Joint Optimization of Multi-UAV Deployment and 3D Positioning in Traffic-Aware Aerial Networks
Unmanned Aerial Vehicles (UAVs) have emerged as a key enabler for next-generation wireless networks due to their on-demand deployment, high mobility, and ability to provide Line-of-Sight (LoS) connectivity. These features make UAVs particularly well-suited for dynamic and mission-critical applications such as intelligent transportation systems and emergency communications. However, effectively positioning multiple UAVs in real-time to meet non-uniform, time-varying traffic demands remains a sig…

2 years later, my Freedom of Information Request shows a snapshot of Government ignoring Vancouver Islanders for 20 years.
On June 28, 2023 I submitted a Request for Information to the Ministry of Transportation and Infrastructure of British Columbia for documents related to the Island Railway on Vancouver Island. It took two years to receive the response.
#VancouverIsland #BC #BCPoli #transportation #FOiA #Canada #CdnPoli
https://chrisalemany.ca/b/2tp

paris_transportation: Paris Transportation (2016)
A multiplex transportation network of Ile-de-France, jointly representing the road network, train network, and subway network. Nodes are intersections, rail stations or metro stations. Different modes of transportation are given by different layers. Within-layer edges represent direct transference by a particular mode of transportation, and between-layer edges represent the conjunction of those layers at that node.
This network ha…

Trust-MARL: Trust-Based Multi-Agent Reinforcement Learning Framework for Cooperative On-Ramp Merging Control in Heterogeneous Traffic Flow
Jie Pan, Tianyi Wang, Christian Claudel, Jing Shi
https://arxiv.org/abs/2506.12600

Trust-MARL: Trust-Based Multi-Agent Reinforcement Learning Framework for Cooperative On-Ramp Merging Control in Heterogeneous Traffic Flow
Intelligent transportation systems require connected and automated vehicles (CAVs) to conduct safe and efficient cooperation with human-driven vehicles (HVs) in complex real-world traffic environments. However, the inherent unpredictability of human behaviour, especially at bottlenecks such as highway on-ramp merging areas, often disrupts traffic flow and compromises system performance. To address the challenge of cooperative on-ramp merging in heterogeneous traffic environments, this study pro…

MMHU: A Massive-Scale Multimodal Benchmark for Human Behavior Understanding
Renjie Li, Ruijie Ye, Mingyang Wu, Hao Frank Yang, Zhiwen Fan, Hezhen Hu, Zhengzhong Tu
https://arxiv.org/abs/2507.12463

MMHU: A Massive-Scale Multimodal Benchmark for Human Behavior Understanding
Humans are integral components of the transportation ecosystem, and understanding their behaviors is crucial to facilitating the development of safe driving systems. Although recent progress has explored various aspects of human behavior$\unicode{x2014}$such as motion, trajectories, and intention$\unicode{x2014}$a comprehensive benchmark for evaluating human behavior understanding in autonomous driving remains unavailable. In this work, we propose $\textbf{MMHU}$, a large-scale benchmark for hu…

Resilient-native and Intelligent NextG Systems
Mehdi Bennis
https://arxiv.org/abs/2506.12795 https://arxiv.org/pdf/2506.12795

Resilient-native and Intelligent NextG Systems
Just like power, water and transportation systems, wireless networks are a crucial societal infrastructure. As natural and human-induced disruptions continue to grow, wireless networks must be resilient to unforeseen events, able to withstand and recover from unexpected adverse conditions, shocks, unmodeled disturbances and cascading failures. Despite its critical importance, resilience remains an elusive concept, with its mathematical foundations still underdeveloped. Unlike robustness and rel…

Nearly 300,000 crash records stolen from Texas transportation department https://therecord.media/car-crash-records-stolen-texas-transportation-department

Joe likes public transportation. #trains

Unifying Chemical and Electrochemical Thermodynamics of Electrodes
Archie Mingze Yao, Amal Sebastian, Venkatasubramaian Viswanathan
https://arxiv.org/abs/2507.10677

Unifying Chemical and Electrochemical Thermodynamics of Electrodes
Batteries are critical for electrified transportation and aviation, yet thermodynamic understanding of electrode materials remains lacking, as indicated by the often-seen violation of the second law of thermodynamics of open-circuit voltage (OCV) models. On the other hand, thermodynamic modeling rarely utilizes electrochemical data such as OCV, entropic heat (dOCV/dT), which contains rich thermodynamic information. This work introduces a framework of thermodynamic modeling of materials for elec…

Supply Chain Optimization via Generative Simulation and Iterative Decision Policies
Haoyue Bai, Haoyu Wang, Nanxu Gong, Xinyuan Wang, Wangyang Ying, Haifeng Chen, Yanjie Fu
https://arxiv.org/abs/2507.07355

Supply Chain Optimization via Generative Simulation and Iterative Decision Policies
High responsiveness and economic efficiency are critical objectives in supply chain transportation, both of which are influenced by strategic decisions on shipping mode. An integrated framework combining an efficient simulator with an intelligent decision-making algorithm can provide an observable, low-risk environment for transportation strategy design. An ideal simulation-decision framework must (1) generalize effectively across various settings, (2) reflect fine-grained transportation dynami…

Weakening NEPA without replaciing it with something better is no abundance agenda.
This highway widening would foreclose future transit expansion and probably make traffic worse for most drivers.It is opposed by both local governments it goes through. NEPA is the only veto point.
A transit project with the same local opposition would be dead on arrival.

Alexandria asks VDOT to delay adding express lanes to Woodrow Wilson Bridge | ALXnow
Alexandria Mayor Alyia Gaskins and city staff are asking that the Virginia Department of Transportation delay approval of a preferred alternative on a plan to add express lanes from the Springfield Interchange across the Woodrow Wilson Bridge. In an April letter to VDOT, Gaskins wrote that the project will bring "Alexandria "substantial consequences to our

https://techcrunch.com/2025/06/27/prolific-cybercrime-gang-now-targeting-airlines-and-the-transportation-sector/
Prolific cybercrime gang now targeting airlines and the transportation sector

Prolific cybercrime gang now targeting airlines and the transportation sector | TechCrunch
The fresh wave of attacks targeting airlines comes soon after the hackers hit the U.K. retail sector and the insurance industry.

A Roadmap for Climate-Relevant Robotics Research
Alan Papalia, Charles Dawson, Laurentiu L. Anton, Norhan Magdy Bayomi, Bianca Champenois, Jung-Hoon Cho, Levi Cai, Joseph DelPreto, Kristen Edwards, Bilha-Catherine Githinji, Cameron Hickert, Vindula Jayawardana, Matthew Kramer, Shreyaa Raghavan, David Russell, Shide Salimi, Jingnan Shi, Soumya Sudhakar, Yanwei Wang, Shouyi Wang, Luca Carlone, Vijay Kumar, Daniela Rus, John E. Fernandez, Cathy Wu, George Kantor, Derek Young, Hanumant Sin…

A Roadmap for Climate-Relevant Robotics Research
Climate change is one of the defining challenges of the 21st century, and many in the robotics community are looking for ways to contribute. This paper presents a roadmap for climate-relevant robotics research, identifying high-impact opportunities for collaboration between roboticists and experts across climate domains such as energy, the built environment, transportation, industry, land use, and Earth sciences. These applications include problems such as energy systems optimization, construct…

How many passengers? 🤔 🐐
#India #Karnataka #bikes #goats #transportation

Lives, not stocks! Animals are not stocks! #AnimalRights

Animals are not stock!
Transportation is a highly traumatic time for a lot of animals

chicago_road: Chicago road network
A transportation network of Chicago, USA, from an unknown date (probably late 20th century). Nodes represent intersections or endpoints and edge represent the road connecting these nodes.
This network has 12982 nodes and 39018 edges.
Tags: Transportation, Roads, Unweighted
https://

Norway to send F-35 fighter jets to Poland to cover transportation hub for Ukrainian military aid: https://benborges.xyz/2025/06/30/norway-to-send-f-fighter.html

Report: 98 Percent Of U.S. Commuters Favor Public Transportation For Others
https://theonion.com/report-98-percent-of-u-s-commuters-favor-public-trans-1819565837/

Report: 98 Percent Of U.S. Commuters Favor Public Transportation For Others
WASHINGTON, DC–A study released Monday by the American Public Transportation Association reveals that 98 percent of Americans support the use of mass transit by others.

Design of A* based heuristic algorithm for efficient interdiction in multi-Layer networks
Sukanya Samanta
https://arxiv.org/abs/2506.10017 https://

Design of A* based heuristic algorithm for efficient interdiction in multi-Layer networks
Intercepting a criminal using limited police resources presents a significant challenge in dynamic crime environments, where the criminal's location continuously changes over time. The complexity is further heightened by the vastness of the transportation network. To tackle this problem, we propose a layered graph representation, in which each time step is associated with a duplicate of the transportation network. For any given set of attacker strategies, a near-optimal defender strategy is com…

ServiceUp, a vehicle repair process automation startup, raised a $55M Series B led by PeakSpan Capital, taking its total funding to nearly $70M (Mary Ann Azevedo/Crunchbase News)
https://news.crunchbase.com/transportation/autotech-startup-se…

Autotech Startup ServiceUp Lands $55M In Series B Funding 
ServiceUp, a platform that automates and manages the vehicle repair process, has raised $55 million in a Series B round of funding led by PeakSpan Capital.

Quite scary... 😬
https://www.reuters.com/business/autos-transportation/grok-ai-be-available-tesla-vehicles-next-week-musk-says-2025-07-10/

Introducing the world's first self-charging tender powered by the sun! Sunpower Yachts International unveils the Solar-eJET 3.3m, designed for solar-equipped yachts to enhance energy independence for auxiliary craft. #climatechange #climatesolutions

World's first self-charging tender that harnesses sun's power debuts
The Solar-eJET 3.3m is the world's first inflatable tender that recharges directly from a yacht's solar system.

From ⁨⁨⁨⁨⁨#AnnafromUkraine⁩⁩⁩⁩⁩ @AnnafromUkraine@youtube.com
PUTIN'S REGIME CRISIS: ELIMINATING HIS INNER CIRCLE Vlog 1098: War in #Ukraine
Former #Transportation

3GPP NR V2X Mode 2d: Analysis of Distributed Scheduling for Groupcast using ns-3 5G LENA Simulator
Thomas Fehrenbach, Luis Omar Ortiz Abrego, Cornelius Hellge, Thomas Schierl, J\"org Ott
https://arxiv.org/abs/2508.09708

3GPP NR V2X Mode 2d: Analysis of Distributed Scheduling for Groupcast using ns-3 5G LENA Simulator
Vehicle-to-everything (V2X) communication is a key technology for enabling intelligent transportation systems (ITS) that can improve road safety, traffic efficiency, and environmental sustainability. Among the various V2X applications, platooning is one of the most promising ones, as it allows a group of vehicles to travel closely together at high speeds, reducing fuel consumption and emissions. However, it poses significant challenges for wireless communication, such as high reliability and lo…

roadnet: U.S. roads (CA, PA, TX)
Road networks from three US states (CA, PA, TX), in which edges are stretches of road and vertices are intersections of roads.
This network has 1971281 nodes and 5533214 edges.
Tags: Transportation, Roads, Unweighted
https://networks.skewed.de/net/roadnet

Geo-ORBIT: A Federated Digital Twin Framework for Scene-Adaptive Lane Geometry Detection
Rei Tamaru, Pei Li, Bin Ran
https://arxiv.org/abs/2507.08743 https…

Geo-ORBIT: A Federated Digital Twin Framework for Scene-Adaptive Lane Geometry Detection
Digital Twins (DT) have the potential to transform traffic management and operations by creating dynamic, virtual representations of transportation systems that sense conditions, analyze operations, and support decision-making. A key component for DT of the transportation system is dynamic roadway geometry sensing. However, existing approaches often rely on static maps or costly sensors, limiting scalability and adaptability. Additionally, large-scale DTs that collect and analyze data from mult…

I agree that skywalks are not ideal, but I don’t know what other options there are? Arlington County DES is *hostile* to anything that inconveniences drivers. What’s the county going to do, place a crossing guard or cops there 24/7?
https://www.arlnow.co…

‘One Rosslyn’ development project wins commission’s support but new skywalk does not | ARLnow.com
A proposed 845-unit redevelopment project in Rosslyn has won the support of the Arlington Transportation Commission. The commission voted 11-0 in support of the project on a 2.3-acre site at 1901 and 1911 Fort Myer Drive, near Gateway Park. The proposal by Penzance would prove "pretty transformational," said commission member Sohail Husain, who served on

Ouch
Toronto’s latest bike lane plan doesn’t propose new lanes for the first time in years
#topoli #biketo

Interfacially ordered phase states enable high-strength ductile eutectic Al alloys
Hemant Kumar, Praveen Kumar, Dierk Raabe, Baptiste Gault, Surendra Kumar Makineni
https://arxiv.org/abs/2507.08327

Interfacially ordered phase states enable high-strength ductile eutectic Al alloys
Lightweight, high-strength structural materials are component enablers in transportation and aerospace, improving carbon footprint and fuel efficiency. Aluminium (Al)-based eutectics have property combinations that qualify them for such applications. However, they are prone to catastrophic failure because of insufficient load transfer across the interfaces between the brittle eutectic phase and the ductile matrix. Here we present a general solution to this problem by engineering these interface…

Urban Composition III 🫟
都市构图 III 🫟
📷 Nikon FE
🎞️Ilford FP4 Plus, expired 1995
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

Yiding Cao Geld mit PayPal.Me senden
Folgen Sie dem Link PayPal.Me/dingsterdingster und geben Sie den Betrag ein. Es ist bequem und sicher. Sie haben noch kein PayPal-Konto? Kein Problem.

Integer-Clustering Optimization of Hydrogen and Battery EV Fleets Considering DERs
Sijia Geng, Thomas Lee, Dharik Mallapragada, Audun Botterud
https://arxiv.org/abs/2506.09388

Integer-Clustering Optimization of Hydrogen and Battery EV Fleets Considering DERs
Electrified transportation leads to a tighter integration between transportation and energy distribution systems. In this work, we develop scalable optimization models to co-design hydrogen and battery electric vehicle (EV) fleets, distributed energy resources, and fast-charging and hydrogen-fueling infrastructure to efficiently meet transportation demands. A novel integer-clustering formulation is used for optimizing fleet-level EV operation while maintaining accurate individual vehicle dispat…

Complexity Analysis of a Bicriteria Directed Multimodal Transportation Network Design Problem
Dominik Leib, Susanne Fritzler, Neele Leith\"auser
https://arxiv.org/abs/2507.07894

Complexity Analysis of a Bicriteria Directed Multimodal Transportation Network Design Problem
In this paper, we address a bicriteria network design problem that arises from practical applications in urban and rural public transportation planning. We establish the problem's complexity and demonstrate inapproximability results, highlighting the inherent difficulties in finding optimal solutions. Additionally, we identify special cases where approximability can be achieved, providing valuable insights for practitioners. Our proofs leverage complexity results related to directed network des…

Transportation Cyber Incident Awareness through Generative AI-Based Incident Analysis and Retrieval-Augmented Question-Answering Systems
Ostonya Thomas, Muhaimin Bin Munir, Jean-Michel Tine, Mizanur Rahman, Yuchen Cai, Khandakar Ashrafi Akbar, Md Nahiyan Uddin, Latifur Khan, Trayce Hockstad, Mashrur Chowdhury
https://arxiv.org/abs/2508.025…

Transportation Cyber Incident Awareness through Generative AI-Based Incident Analysis and Retrieval-Augmented Question-Answering Systems
Technological advancements have revolutionized numerous industries, including transportation. While digitalization, automation, and connectivity have enhanced safety and efficiency, they have also introduced new vulnerabilities. With 95% of data breaches attributed to human error, promoting cybersecurity awareness in transportation is increasingly critical. Despite numerous cyberattacks on transportation systems worldwide, comprehensive and centralized records of these incidents remain scarce. …

Probing Non-Thermal Processes in Stellar Flares on AU Mic
Adalyn Gibson, Adam F. Kowalski, Adina D. Feinstein
https://arxiv.org/abs/2506.10201 https://

Probing Non-Thermal Processes in Stellar Flares on AU Mic
The role of non-thermal proton energy transportation during solar and stellar flares is largely unknown; a better understanding of this physical process will allow us to rectify longstanding deficiencies in flare models. One way to detect the presence of non-thermal protons during flares is through the Orrall-Zirker (OZ) effect whereby an enhanced red wing appears in hydrogen emission lines (e.g., Lyman-$α$ at 1215.67 Angstrom). We analyze archival Hubble Space Telescope/Cosmic Origins Spectro…

So I’ll fly no more on Boeing
So high into the sky,
Though the fares be e’er so tempting —
For I just don’t wish to die.
For the engineering’s sketchy
And the workmanship is trash.
And the planes they sometimes wobble —
Then they tilt, and plunge, and crash.
Though the sky was made for soaring,
Like a hawk that circles high.
Yet I’ll no more board a Boeing —
For I’m not so keen to die.
Hugh Iglarsh

A Byronic Ode to Boeing
(Apologies to His Lordship ... and inspired by His Hackship Ted Cruz, chairman of the Senate Committee on Commerce, Science, and Transportation, who

contiguous_usa: Contiguous states (USA)
A network of contiguous states in the USA, in which each state is a node and two nodes are connected if they share a land-based geographic border. The dataset includes the lower 48 states, and the District of Columbia.
This network has 49 nodes and 107 edges.
Tags: Transportation, Roads, Unweighted

Transportation Secretary Sean Duffy, who has vehemently described the New York City subway as a hellscape, has been named to oversee NASA — putting him in charge of rocket ships that are far more dangerous than public transit.
After Donald Trump pulled the nomination of tech entrepreneur Jared Isaacman for the post, the president announced Duffy would be the interim NASA administrator.
Trump made the announcement on Truth Social, praising the former Real World cast member: “Sean i…

Man Afraid to Ride Subway Named Head of NASA
Trump has tapped Transportation Secretary Sean Duffy as NASA administrator.

Cybersecurity threats continue to mount, so eyes akimbo and don't forget to check out today's Metacurity for the most critical infosec developments you should know, including
--Airlines, transportation sector are Scattered Spider's latest targets,
--Sinaloa cartel used hacked phone records and surveillance cameras to help kill FBI informants,
--Germany orders Apple and Google to remove DeepSeek from app stores,
--Fake US bank accounts fuel romance scam indu…

Airlines, transportation sector are Scattered Spider's latest targets
Sinaloa cartel used hacked phone records and surveillance cameras to help kill FBI informants, Germany orders Apple and Google to remove DeepSeek from app stores, Fake US bank accounts fuel romance scam industry, Trump builds giant US citizen database, Canada orders Hikvision to shut down, more

us_roads: United States roads (2000)
The road networks of the 50 US States and the District of Columbia based on UA Census 2000 TIGER/Line Files. Edges are stretches of road and vertices are intersections of roads. The data sets were assembled by Dominik Schultes. The 'merged' network contains all the states merged together.
This network has 547028 nodes and 670443 edges.
Tags: Transportation, Roads, Unweighted

Deep and diverse population synthesis for multi-person households using generative models
Hai Yang, Hongying Wu, Linfei Yuan, Xiyuan Ren, Joseph Y. J. Chow, Jinqin Gao, Kaan Ozbay
https://arxiv.org/abs/2508.09964

Deep and diverse population synthesis for multi-person households using generative models
Synthetic population is an increasingly important material used in numerous areas such as urban and transportation analysis. Traditional methods such as iterative proportional fitting (IPF) is not capable of generating high-quality data when facing datasets with high dimension. Latest population synthesis methods using deep learning techniques can resolve such curse of dimensionality. However, few controls are placed when using these methods, and few of the methods are used to generate syntheti…

REALISM: A Regulatory Framework for Coordinated Scheduling in Multi-Operator Shared Micromobility Services
Heng Tan, Hua Yan, Yukun Yuan, Guang Wang, Yu Yang
https://arxiv.org/abs/2508.10166

REALISM: A Regulatory Framework for Coordinated Scheduling in Multi-Operator Shared Micromobility Services
Shared micromobility (e.g., shared bikes and electric scooters), as a kind of emerging urban transportation, has become more and more popular in the world. However, the blooming of shared micromobility vehicles brings some social problems to the city (e.g., overloaded vehicles on roads, and the inequity of vehicle deployment), which deviate from the city regulator's expectation of the service of the shared micromobility system. In addition, the multi-operator shared micromobility system in a ci…

Layers of a City: Network-Based Insights into San Diego's Transportation Ecosystem
Matthew Chan, Steve Sharp, Jiajian Zhu, Raman Ebrahimi
https://arxiv.org/abs/2508.04694 ht…

Layers of a City: Network-Based Insights into San Diego's Transportation Ecosystem
Analyzing the structure and function of urban transportation networks is critical for enhancing mobility, equity, and resilience. This paper leverages network science to conduct a multi-modal analysis of San Diego's transportation system. We construct a multi-layer graph using data from OpenStreetMap (OSM) and the San Diego Metropolitan Transit System (MTS), representing driving, walking, and public transit layers. By integrating thousands of Points of Interest (POIs), we analyze network access…

paris_transportation: Paris Transportation (2016)
A multiplex transportation network of Ile-de-France, jointly representing the road network, train network, and subway network. Nodes are intersections, rail stations or metro stations. Different modes of transportation are given by different layers. Within-layer edges represent direct transference by a particular mode of transportation, and between-layer edges represent the conjunction of those layers at that node.
This network ha…

Beer Path Problems in Temporal Graphs
Andrea D'Ascenzo, Giuseppe F. Italiano, Sotiris Kanellopoulos, Anna Mpanti, Aris Pagourtzis, Christos Pergaminelis
https://arxiv.org/abs/2507.08685

Beer Path Problems in Temporal Graphs
Computing paths in graph structures is a fundamental operation in a wide range of applications, from transportation networks to data analysis. The beer path problem, which captures the option of visiting points of interest, such as gas stations or convenience stops, prior to reaching the final destination, has been recently introduced and extensively studied in static graphs. However, existing approaches do not account for temporal information, which is often crucial in real-world scenarios. Fo…

Maryland works to replace parking lots at train stations with dense housing & mixed use development.

Maryland announces $1.25 million in grants for development around rail stations
The announcement comes as Maryland is trying to double down on a bet that transit hubs can help turn the tide on climate and housing affordability issues.

Analyzing Contact Patterns in Public Transportation Systems for Opportunistic Communication Services
Eduardo R. Manika, Emilio C. G. Wille, Joilson Alves Jr
https://arxiv.org/abs/2506.02217

Analyzing Contact Patterns in Public Transportation Systems for Opportunistic Communication Services
Vehicle mobility has a significant impact on wireless communication between vehicles (buses) in Public Transportation Systems (PTS). Nevertheless, the transportation literature does not provide satisfactory models for bus movements because they are influenced by a variety of factors (itineraries, timetables, etc.). Custom-made mobility models that take these issues into account require a great deal of effort and may render simulations unfeasible. This article considers a tool (EMMS) that automa…

'Active travel' study identifies pathways for designing walking- and cycling-friendly cities #city

'Active travel' study identifies pathways for designing walking- and cycling-friendly cities
A new study published in the Proceedings of the National Academy of Sciences reveals the transformative potential of walking- and cycling-friendly policies in cities around the world. Conducted by researchers from UCLA and Google, the study analyzed travel data from more than 11,500 cities across 121 countries, making it the most comprehensive global assessment to date of active transportation, or the potential for walking or biking.

paris_transportation: Paris Transportation (2016)
A multiplex transportation network of Ile-de-France, jointly representing the road network, train network, and subway network. Nodes are intersections, rail stations or metro stations. Different modes of transportation are given by different layers. Within-layer edges represent direct transference by a particular mode of transportation, and between-layer edges represent the conjunction of those layers at that node.
This network ha…

Intelligent Travel Activity Monitoring: Generalized Distributed Acoustic Sensing Approaches
Ruikang Zhong, Chia-Yen Chiang, Mona Jaber, Rupert De Wilde, Peter Hayward
https://arxiv.org/abs/2506.10237

Intelligent Travel Activity Monitoring: Generalized Distributed Acoustic Sensing Approaches
Obtaining data on active travel activities such as walking, jogging, and cycling is important for refining sustainable transportation systems (STS). Effectively monitoring these activities not only requires sensing solutions to have a joint feature of being accurate, economical, and privacy-preserving, but also enough generalizability to adapt to different climate environments and deployment conditions. In order to provide a generalized sensing solution, a deep learning (DL)-enhanced distribute…

paris_transportation: Paris Transportation (2016)
A multiplex transportation network of Ile-de-France, jointly representing the road network, train network, and subway network. Nodes are intersections, rail stations or metro stations. Different modes of transportation are given by different layers. Within-layer edges represent direct transference by a particular mode of transportation, and between-layer edges represent the conjunction of those layers at that node.
This network ha…

A Comprehensive Survey of Unmanned Aerial Systems' Risks and Mitigation Strategies
Sharad Shrestha, Mohammed Ababneh, Satyajayant Misra, Henry M. Cathey, Jr., Roopa Vishwanathan, Matt Jansen, Jinhong Choi, Rakesh Bobba, Yeongjin Jang
https://arxiv.org/abs/2506.10327

A Comprehensive Survey of Unmanned Aerial Systems' Risks and Mitigation Strategies
In the last decade, the rapid growth of Unmanned Aircraft Systems (UAS) and Unmanned Aircraft Vehicles (UAV) in communication, defense, and transportation has increased. The application of UAS will continue to increase rapidly. This has led researchers to examine security vulnerabilities in various facets of UAS infrastructure and UAVs, which form a part of the UAS system to reinforce these critical systems. This survey summarizes the cybersecurity vulnerabilities in several phases of UAV deplo…

This https://arxiv.org/abs/2412.01012 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Optimal transport and regularity of weak Kantorovich potentials on a globally hyperbolic spacetime
We consider the optimal transportation problem on a globally hyperbolic spacetime for some cost function $c_2$, which corresponds to the optimal transportation problem on a complete Riemannian manifold where the cost function is the Riemannian distance squared. Building on insights from previous studies on the Riemannian and Lorentzian case, our main goal is to investigate the regularity of $π$-solutions (weak versions of Kantorovich potentials), from which we can conclude, in a classical way,…

paris_transportation: Paris Transportation (2016)
A multiplex transportation network of Ile-de-France, jointly representing the road network, train network, and subway network. Nodes are intersections, rail stations or metro stations. Different modes of transportation are given by different layers. Within-layer edges represent direct transference by a particular mode of transportation, and between-layer edges represent the conjunction of those layers at that node.
This network ha…

Beyond Connectivity: Higher-Order Network Framework for Capturing Memory-Driven Mobility Dynamics
Chen Zhang, J\"urgen Hackl
https://arxiv.org/abs/2507.07727

Beyond Connectivity: Higher-Order Network Framework for Capturing Memory-Driven Mobility Dynamics
Understanding and predicting mobility dynamics in transportation networks is critical for infrastructure planning, resilience analysis, and traffic management. Traditional graph-based models typically assume memoryless movement, limiting their ability to capture sequential dependencies inherent in real-world mobility patterns. In this study, we introduce a novel higher-order network framework for modeling memory-dependent dynamics in transportation systems. By extending classical graph represen…

Public school districts such as Dayton’s are responsible for transporting students who attend private and charter schools.
When they fail to do so, they risk fines of millions of dollars.
A shortage of drivers and buses
combined with the threat of fines, means that
🆘 public school districts in Dayton and around Ohio find themselves relegating their own students to the back of the transportation line.
“I’m going to have to use Uber,
and it’s going to cost …

Governance and Technological Challenge in Digital Solidarity Economies: A Case Study of a Collaborative Transportation Platform in South Korea
Jeongone Seo, Tawfiq Ammari
https://arxiv.org/abs/2507.04166

Governance and Technological Challenge in Digital Solidarity Economies: A Case Study of a Collaborative Transportation Platform in South Korea
South Korea's City P illustrates how lofty goals of digital solidarity can falter when challenged by local governance realities. Drawing on Hansmann's ownership theory, collaborative governance concepts, and platform cooperativism, we conducted a qualitative case study involving policy documents, independent assessments, and 11 in-depth interviews with residents, officials, and technology developers. Findings reveal a marked disconnect between the initiative's stated emphasis on community co-ow…

Stacked Intelligent Metasurfaces-Aided eVTOL Delay Sensitive Communications
Liyuan Chen, Kai Xiong, Yujie Qin, Hanqing Yu, Supeng Leng, Chau Yuen
https://arxiv.org/abs/2507.06632 …

Stacked Intelligent Metasurfaces-Aided eVTOL Delay Sensitive Communications
With rapid urbanization and increasing population density, urban traffic congestion has become a critical issue, and traditional ground transportation methods are no longer sufficient to address it effectively. To tackle this challenge, the concept of Advanced Air Mobility (AAM) has emerged, aiming to utilize low-altitude airspace to establish a three-dimensional transportation system. Among various components of the AAM system, electric vertical take-off and landing (eVTOL) aircraft plays a pi…

The NHTSA certifies Amazon's Zoox self-driving vehicles for demonstration use and closes a probe from 2022 into whether they complied with federal requirements (David Shepardson/Reuters)
https://www.reuters.com/business/autos-tra

paris_transportation: Paris Transportation (2016)
A multiplex transportation network of Ile-de-France, jointly representing the road network, train network, and subway network. Nodes are intersections, rail stations or metro stations. Different modes of transportation are given by different layers. Within-layer edges represent direct transference by a particular mode of transportation, and between-layer edges represent the conjunction of those layers at that node.
This network ha…

Maryland DOT launches new policy of quick-fix road diets with paint & plastic "bollards" after initial test projects work well. Approach is try it for 6-9 months and see if it works in place of long studies.
https://www.

Maryland plans more ‘quick build’ road safety changes, citing success across state
Planners have a menu of traffic calming measures to consider for each site.

The Trump administration found
“no viable path” forward
to complete California’s high-speed rail project
following a nearly four-month investigation that jeopardizes
$4 billion in federal funding.
In a 310-page compliance review released Wednesday,
the Department of Transportation cited budget shortfalls,
missed deadlines and a misleading projected ridership to connect San Francisco to Los Angeles via fast rail.
The review targets federal gran…

Trump administration moves to pull funding on high-speed rail
The Trump administration could pull $4 billion in federal funding from California's high-speed rail project within 37 days, following a Department of Transportation compliance review.

A bottleneck model with shared autonomous vehicles: Scale economies and price regulations
Koki Satsukawa, Yuki Takayama
https://arxiv.org/abs/2508.08848 https://

A bottleneck model with shared autonomous vehicles: Scale economies and price regulations
This study examines how scale economies in the operation of shared autonomous vehicles (SAVs) affect the efficiency of a transportation system where SAVs coexist with normal vehicles (NVs). We develop a bottleneck model where commuters choose their departure times and mode of travel between SAVs and NVs, and analyze equilibria under three SAV-fare scenarios: marginal-cost pricing, average-cost pricing, and unregulated monopoly pricing. Marginal-cost pricing reduces commuting costs but results i…

paris_transportation: Paris Transportation (2016)
A multiplex transportation network of Ile-de-France, jointly representing the road network, train network, and subway network. Nodes are intersections, rail stations or metro stations. Different modes of transportation are given by different layers. Within-layer edges represent direct transference by a particular mode of transportation, and between-layer edges represent the conjunction of those layers at that node.
This network ha…

london_transport: London Transport Network
Multiplex network with 3 edge types representing links within the three layers of London train stations: Underground, Overground and DLR.
This network has 369 nodes and 441 edges.
Tags: Transportation, Public Transport, Multilayer, Weighted
https://networks.skew…

Comparison of Rochester with Buffalo shows why cities should remove, not underground, their bad highways.
Draws one good lesson & one bad one:
Yes, plan in advance for what you want to do.
No, don't try to "build consensus". Build support. Consensus-seeking doesn't avoid "paralysis by analysis," it creates it.

Rochester gave up on a highway and filled it in. Should Baltimore?
Rochester gave up lanes of highway traffic to turn a trench into green space — and wants to do more.

london_transport: London Transport Network
Multiplex network with 3 edge types representing links within the three layers of London train stations: Underground, Overground and DLR.
This network has 369 nodes and 441 edges.
Tags: Transportation, Public Transport, Multilayer, Weighted
https://networks.skew…

eu_airlines: European airline network
A multiplex network of airline routes among European airports, where each of the 37 edge types represents routes by a different airline.
This network has 450 nodes and 3588 edges.
Tags: Transportation, Airport, Multilayer, Unweighted
https://networks.skewed.de/net/eu_airl…

Maryland works to replace parking lots at train stations with dense housing & mixed use development.

faa_routes: FAA Preferred Routes (2010)
A network of air traffic routes, from the FAA (Federal Aviation Administration) National Flight Data Center (NFDC) preferred routes database (www.fly.faa.gov). Date of extraction is prior to 2010. Nodes represent airports or service centers, and a directed edge is the preferred route between airport i and airport j.
This network has 1226 nodes and 2615 edges.
Tags: Transportation, Airport, Unweighted

Complexity of interchanges at multi-lane expressway with separate free & toll lanes confuses drivers & creates safety hazard. https://www.nbcwashington.com/news/local/transportation/fatal-beltway-crash-express-lanes-braddock-…

After deadly Beltway crash, Express Lanes official urges vigilance
A deadly crash in the Express Lanes on the Capital Beltway in Northern Virginia is raising safety concerns. Virginia State Police say they believe a driver of a…

london_transport: London Transport Network
Multiplex network with 3 edge types representing links within the three layers of London train stations: Underground, Overground and DLR.
This network has 369 nodes and 441 edges.
Tags: Transportation, Public Transport, Multilayer, Weighted
https://networks.skew…

roadnet: U.S. roads (CA, PA, TX)
Road networks from three US states (CA, PA, TX), in which edges are stretches of road and vertices are intersections of roads.
This network has 1090920 nodes and 3083796 edges.
Tags: Transportation, Roads, Unweighted
https://networks.skewed.de/net/roadnet

us_roads: United States roads (2000)
The road networks of the 50 US States and the District of Columbia based on UA Census 2000 TIGER/Line Files. Edges are stretches of road and vertices are intersections of roads. The data sets were assembled by Dominik Schultes. The 'merged' network contains all the states merged together.
This network has 308401 nodes and 385164 edges.
Tags: Transportation, Roads, Unweighted

chicago_road: Chicago road network
A transportation network of Chicago, USA, from an unknown date (probably late 20th century). Nodes represent intersections or endpoints and edge represent the road connecting these nodes.
This network has 12982 nodes and 39018 edges.
Tags: Transportation, Roads, Unweighted
https://

us_air_traffic: U.S. air traffic
Yearly snapshots of flights among all commercial airports in the United States from 1990 to today. Metadata include passengers, distance, carrier, airport located city, state, and month of the flight.
This network has 2278 nodes and 6390340 edges.
Tags: Transportation, Airport, Unweighted, Metadata, Temporal

contiguous_usa: Contiguous states (USA)
A network of contiguous states in the USA, in which each state is a node and two nodes are connected if they share a land-based geographic border. The dataset includes the lower 48 states, and the District of Columbia.
This network has 49 nodes and 107 edges.
Tags: Transportation, Roads, Unweighted

chicago_road: Chicago road network
A transportation network of Chicago, USA, from an unknown date (probably late 20th century). Nodes represent intersections or endpoints and edge represent the road connecting these nodes.
This network has 12982 nodes and 39018 edges.
Tags: Transportation, Roads, Unweighted
https://

eu_airlines: European airline network
A multiplex network of airline routes among European airports, where each of the 37 edge types represents routes by a different airline.
This network has 450 nodes and 3588 edges.
Tags: Transportation, Airport, Multilayer, Unweighted
https://networks.skewed.de/net/eu_airl…

chicago_road: Chicago road network
A transportation network of Chicago, USA, from an unknown date (probably late 20th century). Nodes represent intersections or endpoints and edge represent the road connecting these nodes.
This network has 12982 nodes and 39018 edges.
Tags: Transportation, Roads, Unweighted
https://