EVALUATING EFFECTIVENESS OF LANE-USE CONTROL DEVICES AT INTERSECTIONS

FIELD STUDIES WERE MADE AT SEVERAL HIGH-VOLUME SIGNALIZED INTERSECTIONS IN THE CHICAGO AREA TO EVALUATE THE EFFECTIVENESS OF DIFFERENT DESIGNS OF ROADSIDE AND OVERHEAD TRAFFIC SIGNS FOR CONTROLLING MULTIPLE TURNS (DOUBLE-LEFT TURNS OR DOUBLE-RIGHT TURNS). THE COMPARATIVE EFFECTIVENESS OF DIFFERENT ROADSIDE DOUBLE-TURN SIGNS WAS ALSO STUDIED IN THE LABORATORY BY MEASURING RESPONSE TIMES AND ACCURACY OF RESPONSES TO QUESTIONS ASKED OF GROUPS OF SUBJECTS CONCERNING THEIR INTERPRETATIONS OF TEST SIGNS, WHEN SHOWN IN RELATION TO SIMULATED DRIVING SITUATIONS. SLIDES WERE USED TO DISPLAY THE DRIVING SITUATIONS AND THE TEST SIGNS. IT WAS FOUND THAT EFFECTIVENESS OF MULTI-TURN CONTROLS COULD BE EVALUATED IN THE FIELD BY STUDYING CHANGES IN THE USE OF THE SECOND, OR OPTIONAL, LANE FOR TURNS, COUPLED WITH OBSERVATIONS OF VIOLATIONS OF LANE-USE CONTROLS. IN THE LABORATORY THE QUESTIONS ON ACCURACY OF RESPONSE APPEARED TO PROVIDE THE MOST USEFUL INFORMATION FOR EVALUATION OF EFFECTIVENESS OF DOUBLE-TURN CONTROL SIGNS. IT WAS CONCLUDED THAT THE REGULATORY LANE-USE CONTROL SIGNS IN THE 1961 EDITION OF MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES SHOULD BE SATISFACTORY FOR CONTROL OF MULTIPLE TURNS, UNTIL REFINEMENTS ARE DEVELOPED FROM FURTHER RESEARCH. /HRB/

• Record URL:
  • https://onlinepubs.trb.org/Onlinepubs/HRBproceedings/41/41-030.pdf
• Supplemental Notes:
  • Vol 41, pp 495-528, 13 FIG, 24 TAB, 3 REF. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Berry, D S
  • Wattleworth, J
  • Schwar, J F
• Publication Date: 1962

Media Info

• Media Type: Digital/other
• Monograph Title: Proceedings of the 41st Annual Meeting of the Highway Research Board, Washington, D.C., January 8-12, 1962
• Serial:
  • Highway Research Board Proceedings
  • Volume: 41
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Alternatives analysis; Constrictions; Overhead traffic signs; Traffic lanes; Traffic signs; Turning traffic
• Old TRIS Terms: Lanes; Option
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00226031
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jan 24 1972 12:00AM