Books by Illinois. Office of Transportation Safety:
Books in the extended shelves:
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Illinois. Office of Transportation Safety: Comparative motor vehicle traffic accident statistics; by county. ([Springfield], in the 20th century), also by Illinois. Bureau of Traffic and Illinois. Division of Highways (page images at HathiTrust)- Illinois. Office of Transportation Safety: Comparative motor vehicle traffic accident statistics in cities of 5,000 population and over (The Bureau, in the 20th century), also by Illinois. Bureau of Traffic and Illinois. Division of Traffic Safety (page images at HathiTrust)
- Illinois. Office of Transportation Safety: A study of the effect of widening and resurfacing on accident rates in Illinois (The Office, 1973) (page images at HathiTrust)
- Illinois. Office of Transportation Safety: Summary of motor vehicle traffic accidents : Entire state; summary of all reported accidents. (State of Illinois, Dept. of Public works and Buildings, Division of Highways, Bureau of Traffic, in the 20th century), also by Illinois. Dept. of Public Works and Buildings and Illinois. Dept. of Transportation (page images at HathiTrust)
Find more by Illinois. Office of Transportation Safety at your library, or elsewhere.