Validation of Urban Freeway Models
Validation of Urban Freeway Models

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Publisher:

Published: 2015

Total Pages: 378

ISBN-13: 9780309274241

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TRB's second Strategic Highway Research Program (SHRP 2) Report S2-L33-RW-1: Validation of Urban Freeway Models documents and presents the results of a project to investigate, validate, and enhance the travel time reliability models developed in the SHRP 2 L03 project titled Analytical Procedures for Determining the Impacts of Reliability Mitigation Strategies. This report explores the use of new datasets and statistical performance measures to validate these models. As part of this validation, this work examined the structure, inputs, and outputs of all of the L33 project models and explored the applicability and validity of all L03 project models. This report proposes new application guidelines and enhancements to the L03 models.

Analytical Procedures for Determining the Impacts of Reliability Mitigation Strategies
Analytical Procedures for Determining the Impacts of Reliability Mitigation Strategies

Author:

Publisher: Transportation Research Board

Published: 2013

Total Pages: 268

ISBN-13: 0309129265

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"Reliability of transport, especially the ability to reach a destination within a certain amount of time, is a regular concern of travelers and shippers. The definition of reliability used in this research is how travel time varies over time. The variability can apply to the travel times observed over a road segment during a specific time slice (e.g., 3 to 6 p.m.) over a fairly long period of time, say a year. The variability can also pertain to the travel times of repeated trips made by a person or a truck between a given origin and destination. Agencies are increasingly aware of the issue of reliability, although the transportation industry as a whole as yet lacks a firm understanding of the causes and solutions to failures of reliability. As the agenda for the SHRP 2 research on travel time reliability took shape, it became clear a fundamental study was required to be able to talk about travel time reliability in a meaningful way"--Foreword.