A FOLLOW-UP EVALUATION OF THE FOLLOWING-TOO-CLOSELY MONITOR

This report is a follow-up evaluation of the Following-Too-Closely Monitor (FTC), a five by eight foot traffic sign and logic system that calculates vehicular time gap and presents a message to the following motorist if the time gap is improper. In an earlier evaluation which utilized four years of accident data (three before and one after), the affectable accident data for the test section fluctuated so widely that it was not possible to quantify the FTC effect. In the present study, six years of accident data (four before and two after) were analyzed. The overall results from both evaluations indicate that the FTC system has a significant positive effect on traffic time gap and may have some benefit in accident reduction. However, data are not plentiful enough to be sure of any accident benefit. /Author/

• Supplemental Notes:
  • Sponsored by North Carolina DOT in cooperation with Federal Highway Administration.
• Corporate Authors:

  University of North Carolina, Chapel Hill

  Highway Safety Research Center
  Chapel Hill, NC  United States  27599
• Authors:
  • Hunter, W W
  • Cole, D G
• Publication Date: 1977-10

Media Info

• Features: Figures; References; Tables;
• Pagination: 39 p.

Subject/Index Terms

• TRT Terms: Crash rates; Data analysis; Driver information systems; Drivers; Following distance; Mathematical analysis; Monitoring; Traffic crashes; Traffic signs
• Uncontrolled Terms: Monitors; Motor vehicle accidents
• Old TRIS Terms: Following distance (Of vehicles)
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 00178722
• Record Type: Publication
• Source Agency: National Safety Council Safety Research Info Serv
• Report/Paper Numbers: HS-028 019U
• Files: HSL, TRIS
• Created Date: Jul 29 1984 12:00AM