00621673

Component

http://onlinepubs.trb.org...trr/1991/1318/1318-018.pdf

https://scholar.google.co...lman&publication_year=1991

An understanding of drivers' en route decisions may help design strategies for ameliorating traffic congestion. A survey of downtown Chicago automobile commuters was conducted to investigate en route diversion in response to incident-induced congestion. The effects of factors such as source of congestion information (radio traffic reports versus observation), driver and trip characteristics, route attributes, and environmental conditions on driver response to delay were explored. En route diversion behavior was found to be influenced by source of traffic information, expected length of delay, regular travel time on the usual route, number of alternate routes used recently, anticipated congestion level on the alternate route, gender of the driver, residential location, self-evaluation statements about risk behavior (personality), and stated preferences about diverting. The results show that real-time traffic information broadcasts provide a basis for en route diversion decisions. Further, length of delay and perception of traffic congestion on the alternate route also influence such decisions. Short-term improvements in real-time traffic information should focus on disseminating information about length of delay due to incidents and the congestion levels on the alternate routes surrounding the incident. This action requires monitoring traffic conditions on the alternate routes along major roadways. Providing clearer information on delays and congestion will help drivers make more informed route selection decisions.

This paper appears in Transportation Research Record No. 1318, Highway Systems, Human Performance, and Safety 1991. 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

01407200

Huchingson, R D

p. 125-136

1991

Transportation Research Record

0309051584

Figures (4) ; References (31) ; Tables (7)

Decision making; Driver information systems; Drivers; Real time control; Real time data processing; Route choice; Traffic congestion; Traffic delays; Traffic diversion; Traffic incidents

Incidents

Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control

TRIS, TRB

Apr 30 1992 12:00AM

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