286 Results

Subcontract: NCHRP 15-73 Design Options to Reduce Turning Motor Vehicle – Bicycle Conflicts at Controlled Intersections

Christopher Monsere
Sirisha Kothuri , Nathan McNeil
BACKGROUND One of the most common locations for fatal motor vehicle-bicyclist crashes is at intersections, which inherently have a large number of turning conflicts. Reducing these conflicts is a key objective in improving intersection safety acr ... Read More

Subcontract: NCHRP 15-74 Safety Evaluation of On-Street Bicycle Facility Design Features

Christopher Monsere
Sirisha Kothuri
https://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=4763 BACKGROUND While non-separated on-street bicycle facilities have been used in the United States for many years, separated on-street bicycle facilities are becoming increasing ... Read More

Exploring the Use of Crowdsourced Data Sources for Pedestrian Count Estimations

Sirisha Kothuri
Nathan McNeil , Kate Hyun , Stephen Mattingly
Counts provide the foundation for measuring nonmotorized travel along a link or a network and are also useful for monitoring trends, planning new infrastructure, and for conducting safety, health, and economic analyses. For safety analysis, they are ... Read More

Real-Time Stochastic Matching Models for Freight Electronic Marketplace

Avinash Unnikrishnan
This grant from the National Science Foundation (NSF) will support research investigating how a real-time marketplace might be constructed to match freight shipments with available carriers. In such a system, freight shippers make a request to the sy ... Read More

Implementing a Community Transportation Academy

Nathan McNeil
Keith Bartholomew
For over 25 years, the Portland Bureau of Transportation has partnered with Portland State University to offer the Portland Traffic and Transportation Course – a 10-week course designed to provide local residents with the skills and knowledge to un ... Read More

New Mobility For All: Can Targeted Information And Incentives Help Underserved Communities Realize The Potential Of Emerging Mobility Options?

Nathan McNeil
John MacArthur
Technology enabled new mobility options such as ride-hailing (e.g. Uber, Lyft), car-sharing (e.g. ReachNow, Car2Go and Zipcar), and micro-mobility (e.g. bike and scooter sharing), along with services such as ride matching, online/mobile travel inform ... Read More

Seamless Wayfinding by Individuals with Functional Disability in Indoor and Outdoor Spaces: An Investigation into Lived Experiences, Data Needs, and Technology Requirements

Martin Swobodzinski
Amy Parker
Human wayfinding and navigation allow human beings to fully participate in the environment and are essential elements for leading healthy, economically sustainable, and full lives. People with disabilities, including individuals with blindness, deafb ... Read More

Statistical Inference for Multimodal Travel Time Reliability

Avinash Unnikrishnan
Miguel Andres Figliozzi , Subhash Kochar
Travel time reliability is a key metric of interest to practitioners and researchers. There are several metrics available for travel time reliability - buffer index, planning index, probability of travel time being higher than a specific value, etc. ... Read More

Marginalized Populations’ Access to Transit: Journeys from Home and Work to Transit

Marisa Zapata
Ivis Garcia , Amy Lubitow , Miriam Abelson
Research demonstrates that marginalized populations experience significant barriers in accessing transit. Much research related to marginalized populations focuses on fares, costs, and locations to utilizing transit. More recent studies look at how t ... Read More

Accessing Opportunities for Household Provisioning Post-COVID-19

Kelly Clifton
Kristina Currans , Amanda Howell
The acquisition of food and household necessities has been dramatically impacted by the COVID-19 pandemic as people are asked to minimize travel to avoid exposure, supply chains are disrupted, transit services are reduced, and stores and restaurants ... Read More

Do Travel Costs Matter?: Using Psychological And Social Equity Perspectives To Evaluate The Effects Of A Low-income Transit Fare Program On Low-income Riders

Liu-Qin Yang
Liming Wang , Aaron Golub
Access to transit can deliver a host of benefits to the riders and to the region. Previous research aiming to study these benefits has primarily relied on data collected from the opening of new routes or transit systems, and has focused on the genera ... Read More

Integrate Socioeconomic Vulnerability for Resilient Transportation Infrastructure Planning

Liming Wang
John MacArthur , Yu Xiao
The objective of this proposal is to develop a new methodology that incorporates community socioeconomic vulnerability in the evaluation of transportation infrastructure vulnerabilities for cities and regions facing multi-hazards such as the Portland ... Read More
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