DAYLIGHT CONSPICUITY OF REVERSIBLE-LANE SIGNAL SYSTEMS

This investigation compared the conspicuity of two traffic signal-light systems for improving the use of peak-hour reversible and dual-use two-way left-turn lanes. The systems considered were the conventional lane-use control signals and a new system of revolving beacons. Six drivers were asked to identify various characteristics of the signals at two distances (91 and 244 m) and three viewing angles (0, 0.09, and 0.17 rad), which approximated a motorist's view from different positions on a five-lane street. At 0 rad, detection and recognition of both signal-light systems was quite good. However, at more extreme viewing angles, the revolving beacon system was detected and recognized more often. It was concluded that the revolving beacon system would be more conspicuous to a driver attempting to enter the reversible lane. (Author abstract)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1329271
• Corporate Authors:

  Human Factors Society

  Johns Hopkins University Press
  Baltimore, MD  United States  21218
• Authors:
  • Strybel, T Z
  • Nassi, R
• Publication Date: 1986-2

Media Info

• Features: References;
• Pagination: p. 83-89
• Serial:
  • Human Factors
  • Volume: 28
  • Issue Number: 1
  • Publisher: Sage Publications, Incorporated
  • ISSN: 0018-7208
  • EISSN: 1547-8181
  • Serial URL: http://hfs.sagepub.com/

Subject/Index Terms

• TRT Terms: Drivers; Human subject testing; Reversible traffic lanes; Traffic signals; Two way left turn lanes; Visibility; Vision
• Old TRIS Terms: Driver vision; Revolving beacons; Two way left turn
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control;

Filing Info

• Accession Number: 00459128
• Record Type: Publication
• Source Agency: Engineering Information, Incorporated
• Files: TRIS
• Created Date: Oct 31 1986 12:00AM