PATROL CAR STOPS SPEEDING AND SHORTENS DRIVER REACTION TIMES

POLIISIAUTO PUDOTTAA NOPEUDET JA LYHENTAEAE REAKTIOAJAT

An experiment was conducted to study the influence of the presence of a police patrol car on driver behaviour. Changes in driver speed and lateral position were measured at a junction from which emerged a cyclist. A police car was stationed 400M ahead of the site of the experiment. Measurements showed that the presence of the police car caused the driver to decrease his speed by 8 to 9 km/h, e.g. His mean speed fell just below the 70 km/h speed limit. The driver reaction was quicker by 1 to 2.5s, and the lateral movement of the car caused by the appearance of the cyclist (40 cm maximum) took place earlier. (TRRL)

  • Authors:
    • SUMMALA, H
    • Hittamaeki, J
    • Lehikoinen, A
    • Lehto, J
    • Vierimaa, J
  • Publication Date: 1984

Language

  • Finnish

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00386058
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jul 30 1984 12:00AM