THE INFLUENCE OF VISUAL PATTERN ON PERCEIVED SPEED AT NEWBRIDGE M8 MIDLOTHIAN

A CONTRIBUTORY FACTOR IN ACCIDENTS AT JUNCTIONS, PARTICULARLY AT JUNCTIONS ON HIGH SPEED ROADS, IS THAT DRIVERS DO NOT REDUCE SPEEDS SUFFICIENTLY TO ALLOW THEM TO NEGOTIATE THE JUNCTIONS SAFELY. A SPECIAL ROAD MARKING HAS BEEN DEVELOPED EMPLOYING A GEOMETRIC BAR PATTERN THAT AFFECTS DRIVERS' JUDGEMENTS OF SPEED CAUSING THEM TO SLOW DOWN. MARKINGS OF THIS TYPE WERE LAID IN OCTOBER 1971 ON THE APPROACHES TO THE NEWBRIDGE ROUNDABOUT ON THE M8 MOTORWAY, MIDLOTHIAN. MEASUREMENTS DURING THE FOLLOWING MONTH SHOWED CONSIDERABLE AND CONSISTENT REDUCTIONS IN SPEED. DURING THE SIXTEEN MONTHS FOLLOWING THE INSTALLATION TWO ACCIDENTS HAVE BEEN REPORTED AT THE SITE; THERE WERE 14 IN THE PREVIOUS YEAR.

• Supplemental Notes:
  • Rept No LR 531
• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • Denton, G G
• Publication Date: 1973

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 14 p.

Subject/Index Terms

• TRT Terms: Crashes; Intersections; Perception; Prevention; Road markings; Safety; Speed; Studies; Traffic speed
• Old TRIS Terms: Speed studies; Traffic marking
• Subject Areas: Highways; Safety and Human Factors; Security and Emergencies;

Filing Info

• Accession Number: 00222400
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: R&d Rept
• Files: TRIS
• Created Date: May 15 1974 12:00AM