Summary of results of test of effect of expressway on traffic flow and accident experience on all streets in 16 sq mi Chicago area defined as Congress Expressway study area; project is based on examination of traffic volume and reported motor vehicle traffic accidents before and after expressway is constructed and opened; accident records for 2 comparable 4-mo periods were examined to determine certain accident characteristics, including precise location by street type and direction, day, and hour of occurrence.
Effect of expressway on distribution of traffic and accidents
Nat Research Council -- Highway Research Board -- Research Record
1963
16 pages
Article (Journal)
English
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