EFFECT OF RIGHT-TURNING VEHICLES AT TRAFFIC SIGNALS
A METHOD IS DESCRIBED FOR DETERMINING THE EFFECT OF RIGHT- TURNING VEHICLES (LEFT-HAND RULE OF THE ROAD) ON THE CAPACITY OF TRAFFIC-SIGNAL-CONTROLLED INTERSECTIONS, AND WAYS ARE SUGGESTED FOR SETTING THE INTERGREEN PERIOD OR AN EARLY CUT-OFF PERIOD TO CATER FOR RIGHT-TURNING MOVEMENTS. FOUR CASES ARE CONSIDERED; WITH AND WITHOUT EXCLUSIVE LANES FOR THE RIGHT-TURNING VEHICLES, AND WITH AND WITHOUT OPPOSING TRAFFIC DURING THE PHASE IN WHICH THE RIGHT-TURNERS ARE PERMITTED TO MOVE. THE METHOD HAS BEEN DERIVED USING A SIMPLE THEORETICAL MODEL TO REPRESENT A SIGNALLED JUNCTION WITH RIGHT-TURNING VEHICLES DISCHARGING THROUGH GAPS IN THE OPPOSING FLOW. THE METHOD ALSO MAKES USE OF EXPERIMENTAL DATA ON DISCHARGE RATES OF RIGHT-TURNING VEHICLES TURNING THROUGH VARIOUS DEGREES OF CURVATURE. A WORKED EXAMPLE IS GIVEN TO ILLUSTRATE THE USE OF THE METHOD. /AUTHOR/
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Authors:
- Webster, F V
- Publication Date: 1967
Media Info
Subject/Index Terms
- TRT Terms: Highway capacity; Intersections; Mathematical models; Opposing traffic; Right turns; Theory; Traffic signals; Turning lanes; Turning traffic
- Uncontrolled Terms: Intersection capacity; Models; Turning movements
- Subject Areas: Highways; Operations and Traffic Management;
Filing Info
- Accession Number: 00225681
- Record Type: Publication
- Source Agency: Traffic Systems Reviews & Abstracts
- Report/Paper Numbers: Rrl Rept Lr86
- Files: TRIS, ATRI
- Created Date: May 13 1970 12:00AM