PROGRESS IN STUDY OF MOTOR VEHICLE PASSING PRACTICES

DETAILED DATA FOR 1,635 PASSINGS FROM STUDIES IN MARYLAND AND VIRGINIA SHOW THAT 33 PER CENT OF THE MANEUVERS WERE MULTIPLE PASSINGS INVOLVING A TOTAL OF 57.3 PER CENT OF THE PASSINGS THAT TOOK PLACE WITHIN AN AVERAGE HOURLY VOLUME OF 375 VEHICLES. THIS FACT INDICATES THE IMPORTANCE OF STUDYING MULTIPLE PASSING MANEUVERS AS WELL AS MANEUVERS IN WHICH ONE VEHICLE PASSES ONLY ONE VEHICLE. OF THE MULTIPLE PASSING MANEUVERS, 63.5 PER CENT WERE COMPOSED OF MANEUVERS IN WHICH ONE VEHICLE PASSED, OR WAS PASSED, BY TWO VEHICLES. A VERY DEFINITE RELATIONSHIP WAS FOUND TO EXIST BETWEEN THE TRAFFIC VOLUME AND THE PERCENTAGE OF THE TOTAL MANEUVERS THAT WERE MULTIPLE PASSINGS. IN NEARLY 85 PER CENT OF THE SINGLE PASSING MANEUVERS THAT TOOK PLACE WHEN THE TRAFFIC VOLUME AVERAGED 375 VEHICLES PER HOUR, THE PASSING VEHICLES SLOWED DOWN TO SOME EXTENT BEFORE ATTEMPTING TO PASS, AND IN 53.7 PER CENT THE PASSING VEHICLE SLOWED DOWN TO THE SAME SPEED AS THE VEHICLE TO BE PASSED. ALTHOUGH A COMPREHENSIVE ANALYSIS OF THE PASSINGS HAS JUST BEGUN, INDICATIONS ARE THAT THE DATA DERIVED FROM THESE STUDIES WILL YIELD EVEN MORE INFORMATION RELATIVE TO DRIVER PSYCHOLOGY AND THE DESIGN OF HIGHWAYS FOR SAFE AND UNCONGESTED MOVEMENT OF TRAFFIC THAN HAD BEEN ANTICIPATED. /AUTHOR/

  • Supplemental Notes:
    • Vol 19, pp 206-217, 11 FIG, 4 TAB
  • Authors:
    • Normann, O K
  • Publication Date: 1940

Media Info

  • Monograph Title: Proceedings of the Nineteenth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 5-8, 1939
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00223482
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Oct 3 1971 12:00AM