00732421

Component

https://doi.org/10.3141/1556-12

http://scholar.google.com...baie&publication_year=1996

When four key freeways in Southern California were damaged on January 17, 1994, by the Northridge earthquake, state and local agencies implemented a variety of emergency measures to the transportation systems in damaged corridors to ensure some degree of mobility during reconstruction. Travelers who had used damaged routes were faced with a variety of travel choices, such as using primary roadway detours, ridesharing, diverting to other roads, using transit, avoiding travel, telecommuting, or changing time of travel. On the basis of comprehensive travel surveys, traffic monitoring, and data collection, it was determined that travelers responded in significantly different ways in each of the four damaged corridors. In the very heavily traveled I-10 (Santa Monica) Freeway Corridor, even though primary roadway detours could only carry approximately 40% of normal freeway capacity, virtually all travelers still drove their automobiles because numerous parallel streets exist in this corridor as alternatives to the freeway. By contrast, research showed that some 7,000 users of the I-5 (Golden State) and SR-14 (Antelope Valley) freeways shifted to commuter trains because parallel roadways were limited. In addition, although most travelers quickly returned to their original trip making choices and mode of travel after damaged freeways were opened, other travelers (including many train riders) chose to remain with the new travel choices for a variety of behavioral reasons, including reliability. Further research indicated that when travelers in Southern California were forced to choose from a variety of new travel choices, their decision making followed a logical hierarchy based on specific trip making requirements and travel time thresholds, as well as their perceptions of the suitability of each choice for their own particular travel needs.

This paper appears in Transportation Research Record No. 1556, Transportation Forecasting: Short-Term Practical Improvements, Travel Behavior Models and Issues, and Artificial Intelligence.

English

p. 96-108

1996

Transportation Research Record

0309059550

Figures (4)

Decision making; Detours; Mode choice; Railroad commuter service; Transportation corridors; Travel behavior; Travel surveys

Northridge Earthquake, January 17, 1994

Traveler response

Southern California

Highways; Planning and Forecasting; Public Transportation; Terminals and Facilities; I72: Traffic and Transport Planning

TRIS, TRB

Feb 19 1997 12:00AM

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