DETERMINING THE LENGTH OF THE APPROACH LANES REQUIRED AT SIGNAL-CONTROLLED INTERSECTIONS ON THROUGH HIGHWAYS

IT IS OFTEN WITH GREAT MISGIVINGS THAT TRAFFIC SIGNALS ARE INSTALLED ON ROADS CARRYING HIGH-SPEED TRAFFIC. THAT IS BECAUSE THE SPEED DIFFERENCES WITHIN THE STRETCH OF ROAD INFLUENCED BY THE SIGNALS MAY BE VERY GREAT AND MAY, IN CONJUNCTION WITH SUDDEN BRAKING AND WITH MERGING AND DIVERGING, MAKE EXACTING DEMANDS ON THE GEOMETRICAL DESIGN OF THE JUNCTION. THIS PAPER IS CONCERNED WITH THE BRAKING OF A FLOW OF MOTOR CARS AS A RESULT OF A SHOCK WAVE WHICH, AT THE BEGINNING OF THE RED PERIOD, MOVES FROM THE STOP LINE BACKWARDS ALONG THE ROAD AGAINST THE INCOMING TRAFFIC, REDUCING THE SPEED OF THE LATTER. IT IS SUGGESTED THAT THE LENGTH OF A QUEUE SHOULD BE DEFINED BY THAT PART OF THE INCOMING TRAFFIC WHICH IS AFFECTED BY THE SHOCK WAVES. ON THIS BASIS, A METHOD IS PROPOSED FOR DETERMINING THE LENGTH OF THE APPROACH LANES REQUIRED. /AUTHOR/

• Supplemental Notes:
  • Vol 2, pp 283-291
• Authors:
  • Rorbech, J
• Publication Date: 1968-9

Media Info

• Serial:
  • Transportation Research /UK/
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Approach lanes; Braking; High speed ground transportation; High speed vehicles; Intersections; Length; Merging traffic; Motor vehicles; Queuing; Shock waves; Speed; Traffic; Traffic lanes; Traffic signals
• Old TRIS Terms: Intersection approach; Lanes
• Subject Areas: Highways; Operations and Traffic Management; Railroads;

Filing Info

• Accession Number: 00225673
• Record Type: Publication
• Source Agency: Traffic Systems Reviews & Abstracts
• Files: TRIS
• Created Date: Apr 27 1970 12:00AM