Research Search Results

SSince September 11, 2001, 188 security-, emergency management-, and infrastructure protection-related planning and implementation projects have been initiated through pprograms managed by the Transportation Research Board (TRB).   One hundred forty-seven of t

This guide, which focuses on showing how to use BPMN for mapping traffic operations business processes, is intended to help transportation agencies move forward in addressing nonrecurring traffic congestion and delivering more reliable travel times on their highway networks. The guide explores va

The goal of this research was to improve urban-scale modeling and network procedures to address operations or spot improvement that affects travel-time choice, route choice, mode choice, reliability, or emissions. Such improvements may include traveler information, expanded transit service, prici

Improving Traffic Incident Scene Management, was designed to establish the foundation for and promote certification of responders to achieve the three objectives of the traffic incident management (TIM) national unified goal (NUG). The intent is to motivate responders from different stakeholder g

This report documents the evaluation of automated/mobile data-collection services to provide data on roadway features and characteristics considered important for safety analysis, especially analysis of data from the SHRP 2 Naturalistic Driving Study (NDS). To obtain these roadway data, SHRP 2 se

This guidebook provides step-by-step procedures for designing and conducting empirically based (i.e., observational) before-and-after studies for operations strategies. While the focus is on operational strategies, the same procedures may be applied to any highway congestion mitigation strategies

Adding transportation capacity improves safety, accessibility, and the economic health of a region but often comes with an economic, social, or environmental price. The public is aware of the price and must be convinced that new capacity is really needed before they will suppor

The research project that produced this report focused on answering the following related questions:

How should highway reconstruction projects be set in space and time to minimize disruption to the traveling public, businesses, and adjacent communities? What is the traffic impact on

Infrastructure needs within the United States have changed from building new facilities to replacing, expanding, or renewing existing facilities. The project management issues involved with infrastructure renewal are different from the issues for new construction. Correspondingly, new project man

Freight traffic has generally been growing at a rate faster than passenger traffic on the nation’s highway network. As a result, freight bottlenecks have begun to develop at various points throughout the network. These have historically been near ports and other intermodal facilities. However, fu