This study developed methods for estimating the expected crash frequency of urban freeway segments with HOV or HOT lanes. The safety impacts of the type of separation between the managed lanes and general purpose lanes were examined.
This white paper outlines the potential for the emerging connected transportation system to interface with smart/connected cities. Its aim is to lay the foundation for defining steps that the U.S. Department of Transportation (USDOT) Connected Vehicle Program should take to identify and ex
Crowdsourcing and Its Application to Transportation Data Collection and Management Volume 2414
The participation of a large and varied group of people in the planning process has long been encouraged to increase the effectiveness and acceptability of plans. However, in practice, partici
The term crowdsourcing is applied in common usage to several dissimilar processes. To establish a clear scope for this report, we have organized crowdsourced transportation data applications into four categories:
1. Third party Aggregated Crowdsourced Data 2. Social Media for Pub
AERIS Concept of Operations documents are intended to convey “transformational ideas” that will be modeled to show the potential environmental benefits that can be achieved through connected vehicle applications.
TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis Report 271: Traffic Signal Operations Near Highway-Rail Grade Crossings presents a review of the current practices associated with the operation of traffic signals at intersections located near highway-rail grade crossings.&nbs
TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 460: Sharing Operations Data Among Agencies document both the qualitative and quantitative business cases for sharing data among transportation-related agencies. The study also documents the institutional, le
TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 454: Response to Extreme Weather Impacts on Transportation Systems examines eight recent cases of extreme weather in the United States from the perspectives of transportation operations, maintenance, design, construction, plann
TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 451: Emergency Medical Services Response to Motor Vehicle Crashes in Rural Areas identifies potential factors that may help reduce the time needed to provide effective medical care to crash occupants on rural roads.
TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 452: State Department of Transportation Fleet Replacement Management Practices explores the current state of the practice regarding fleet replacement management and financing methods by state departments of transportation. The
