TRAFFIC SPEED REPORT NO. 93

This report is another on the continuing study of speeds of vehicles on rural Indiana Highways. Observations of spot speeds were taken on interstate, four-lane and two-lanes highways throughout the state during the months of May and June 1975. Analysis of the speeds showed the overall average speed for passenger cars was 57.6 miles per hour. The overall average speed for heavy trucks was 55.5 miles per hour. This was about the same overall average speed for passenger car and for trucks, as compared to the data collected in June-September 1974 (Speed Report No. 92). No trend of increase in travel speeds is as yet apparent under the 55 mph maximum speed limit.

• Supplemental Notes:
  • Report prepared in cooperation with the Indiana State Highway Commission.
• Corporate Authors:

  Purdue University/Indiana Department of Transportation JHRP

  Purdue University, School of Civil Engineering
  West Lafayette, IN  United States  47907-1284
• Authors:
  • Gadallah, A A
  • Stafford, G K
• Publication Date: 1975-7-30

Media Info

• Features: Figures; Tables;
• Pagination: 20 p.

Subject/Index Terms

• TRT Terms: Automobiles; Four lane highways; Heavy vehicles; Rural highways; Speed limits; Spot speed; Traffic speed; Two lane highways
• Identifier Terms: Interstate Highway System
• Old TRIS Terms: Overall travel speed; Spot speed study
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00128269
• Record Type: Publication
• Report/Paper Numbers: JHRP-75-16 Intrm Rpt.
• Files: TRIS
• Created Date: Mar 29 1976 12:00AM