EXPERIMENTAL INVESTIGATION OF THE EFFECTS OF ROADWAY MARKING ON VEHICLES STOPPING IN PEDESTRIAN CROSSWALKS

THE PURPOSE OF THE EXPERIMENT WAS TO IDENTIFY SOME OF THE ROADWAY, VEHICLE, AND DRIVER FACTORS INDLUENCING THE STOPPING POSITION OF VEHICLES AT A TRAFFIC SIGNAL CONTROLLED INTERSECTION AND TO EXTEND THE FINDINGS OF AN EARLIER SURVEY STUDY IN ORDER TO SUGGEST EFFECTIVE MEANS TO PREVENT VEHICLES FROM COMING TO A STOP IN THE PEDESTRIAN CROSSWALK AREA. THE SITE CHOSEN FOR THIS STUDY WAS THE INTERSECTION OF A ONE-WAY AND A TWO-WAY STREET, CONTROLLED BY A TRAFFIC LIGHT. MEASUREMENTS WERE MADE OF THE DISTANCE FROM THE INTERSECTION TO THE STOPPING POINT OF THE FIRST VEHICLE WHICH PULLED UP TO A RED TRAFFIC SIGNAL. THE MARKINGS ON THE TWO STREETS AND THE HEIGHT OF THE TRAFFIC SIGNAL WERE SYSTEMATICALLY VARIED TO DETERMINE THEIR INFLUENCE ON STOPPING POSITION. THE EFFECTS OF DRIVER SEX, TYPE AND SIZE OF VEHICLES, DIRECTION TAKEN AFTER STOPPING, TRAFFIC FLOW, ONE-WAY/TWO STREET, AND LANE POSITION WERE ALSO STUDIED. IT WAS FOUND THAT GREATEST CONTROL OF STOPPING POSITION, WITH MINUMUM VEHICLE ENCROACHMENT IN THE CROSSWALK, WAS ACHIEVED BY THE USE OF A STOP LINE ACROSS THE TRAFFIC LANE WHICH WAS NOT NEARER TO THE INTERSECTION THAN 2 FEET. /AUTHOR/

• Supplemental Notes:
  • Rept Huf 4, 12 PP, 17 FIG
• Corporate Authors:

  Highway Safety Research Institute

  Huron Parkway and Baxter Road
  Ann Arbor, MI  United States  48109
• Authors:
  • Mortimer, R G
  • NAGAMACHI, M
  • Carlson, W L
• Publication Date: 1969-12

Subject/Index Terms

• TRT Terms: Behavior; Crosswalks; Drivers; Intersections; Road markings; Stopping; Traffic signals; Vehicle characteristics; Vehicles
• Uncontrolled Terms: Stop lines
• Old TRIS Terms: Traffic marking
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00225760
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 29 1970 12:00AM