Assessment of the effect of the 55 mile per hour speed limit on Illinois traffic safety :
report to the Eightieth General Assembly.

APA Citation

Illinois. Division of Traffic Safety. (1978). Assessment of the effect of the 55 mile per hour speed limit on Illinois traffic safety: report to the Eightieth General Assembly. [Springfield]: Illinois Dept. of Transportation, Division of Traffic Safety.

MLA Citation

Illinois. Division of Traffic Safety. Assessment of the Effect of the 55 Mile Per Hour Speed Limit On Illinois Traffic Safety: Report to the Eightieth General Assembly. [Springfield]: Illinois Dept. of Transportation, Division of Traffic Safety, 1978.