The adoption of the permissive right-turn-on-red (RTOR) rule in the United States (except for New York City) has resulted in possible problems with respect to motorists failing to make a full stop before turning right on red. Also, the rate of motorist violations to the NO TURN ON RED sign was also raised as a related problem. The purpose of this study was to determine these violation rates relative to RTOR and to determine the resulting pedestrianrelated conflicts associated with RTOR maneuvers. Based on the collection of observational data for more than 67,000 drivers at 110 intersections in Washington, D.C.; Detroit, Michigan; and Dallas and Austin, Texas, 3.7 percent of all right-turning motorists at RTOR-prohibited intersections violate the RTOR prohibition signs. However, of those motorists given an opportunity to commit an RTOR violation, about 21 percent violate the NO TURN ON RED sign. Although 23.4 percent of RTOR violations result in a conflict with another vehicle or pedestrian, only about 1 out of every 100 total right-turn vehicles is involved in an RTOR conflict. In terms of stopping characteristics at RTOR-allowed sites, 56.9 percent of motorists fail to make a full stop before turning right on red. An analysis of specific data-collection sites resulted in a list of locational factors associated with high and low violation rates. From this analysis a list of 30 candidate countermeasures was developed for possible use relative to RTOR.

Media Info

  • Media Type: Print
  • Features: References; Tables;
  • Pagination: pp 16-28
  • Monograph Title: Traffic control devices and rail highway crossings
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00452648
  • Record Type: Publication
  • ISBN: 0309038227
  • Files: TRIS, TRB
  • Created Date: Apr 30 1988 12:00AM