METHODS OF SIGNALIZING LEFT-TURN MOVEMENTS AT CHANNELIZED INTERSECTIONS
THE TYPE OF TRAFFIC SIGNAL INDICATION THAT WILL CONVEY TO A DRIVER THAT HE MAY TURN LEFT BUT THAT HE MUST ALSO YIELD TO OPPOSING TRAFFIC WAS STUDIED. THREE TYPES OF INDICATIONS WERE TESTED: FULL GREEN BALL, FLASHING AMBER BALL, AND FLASHING RED BALL. IT IS CONCLUDED THAT THE FLASHING AMBER INDICATION SHOULD BE USED FOR LEFT-TURNING TRAFFIC DURING 2- PHASE MODE OPERATION AT ANY SIGNALIZED INTERSECTION THAT HAS: (1) EXCLUSIVE LEFT-TURN CHANNELIZATION OF SOME TYPE, (2) MULTIPLE OR LANE CONTROL TYPE SIGNAL INDICATIONS, AND (3) A PERMISSIVE OR DRIVER OPTION LEFT TURN SIGNAL PHASE. /RRL/
-
Supplemental Notes:
- Vol 37, No 8, PP 48-50, 52-54, 5 FIG, 3 TAB
-
Authors:
- Fairfax, B W
- Publication Date: 1967-5
Media Info
Subject/Index Terms
- TRT Terms: Channelized intersections; Drivers; Flashing traffic signals; Indicators (Instruments); Lane use control signals; Left turns; Opposing traffic; Regulatory signs; Selection and appointment; Traffic signal indications; Traffic signals
- Uncontrolled Terms: Driver selection; Traffic direction
- Old TRIS Terms: Left turn only
- Subject Areas: Highways; Operations and Traffic Management;
Filing Info
- Accession Number: 00225274
- Record Type: Publication
- Source Agency: Road Research Laboratory /UK
- Files: TRIS
- Created Date: Mar 19 1971 12:00AM