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Title:

URBAN FREEWAY GRIDLOCK STUDY: DECREASING THE EFFECTS OF LARGE TRUCKS ON PEAK-PERIOD URBAN FREEWAY CONGESTION

Accession Number:

00497416

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309050103

Abstract:

The Urban Freeway Gridlock Study investigated the effects of large trucks on peak-period urban freeway congestions. The study, undertaken for the California Department of Transportation at the direction of the California legislature was prompted by concerns about freeway congestion and proposals to regulate large-truck traffic on the freeways. The study focused on the freeway systems in the Los Angeles, San Francisco, and San Diego metropolitan areas. It addressed the effects of large trucks, strategies to reduce congestion (improved traffic management, expanded incident management, mandatory night shipping and receiving, and mandatory peak-period truck bans), and the economic effects of these strategies. It was concluded that the volume of large trucks on the freeways does not have a significant effect on peak-period congestion but that truck-involved incidents and accidents do affect congestion significantly. Truck traffic makes a relatively small contribution to freeway congestion except on those few highly congested freeways where truck volumes exceed 10% of total vehicles. It was recommended that the state expand and improve its incident management programs and concurrently expand and intensify its long-term traffic management programs. The state should support a pilot program in Los Angeles to determine whether a cost-effective night shipping and receiving program can be developed. Areawide freeway truck bans should not be pursued; however, time-of-day and lane restrictions should be researched. Finally, it was recommended that the state collect data and improve traffic modeling procedures used to estimate the effects of trucks on air quality.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1256, Trucking Issues 1990. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

Monograph Title:

TRUCKING ISSUES, 1990

Monograph Accession #:

00600946

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Grenzeback, Lance R
Reilly, William R
Roberts, Paul O
Stowers, Joseph R

Pagination:

p. 16-26

Publication Date:

1990

Serial:

Transportation Research Record

Issue Number: 1256
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0-309-05010-3

Features:

References (1) ; Tables (3)

Uncontrolled Terms:

Incidents; Restrictions

Subject Areas:

Economics; Highways; Law; Marine Transportation; Motor Carriers; Operations and Traffic Management; Planning and Forecasting; Research; Safety and Human Factors; I72: Traffic and Transport Planning; I73: Traffic Control

Files:

TRIS, TRB, ATRI

Created Date:

Sep 30 1990 12:00AM

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