A COMPARATIVE STUDY OF TRAFFIC CONTROL SCHEMES AT AN ISOLATED INTERSECTION

This paper illustrates the use of a digital computer to simulate traffic movement at an isolated intersection with four approaches and to compare the effectiveness of the three types of signal control: fixed-cycle signals; vehicle-actuated signals; and Miller's minimum delay control. Simulation results of the fixed-cycle program compare closely with Webster's estimated delays when the degree of saturation is below 0.85. The vehicle-actuated signal appears the most efficient of the three systems. The average vehicle delay at a vehicle-actuated signal is 3.5 to 4.5 seconds lower than that of a fixed-cycle signal. Miller's system is not appreciably lower than that of the vehicle-actuation system. The average vehicle delays for the two systems are nearly equal below 650 veh/h. The proportion of "no-delay" vehicles at a vehicle-actuated signal is the highest of the three systems and this might be an attraction to the motorist.

  • Availability:
  • Corporate Authors:

    Printerhall Limited

    29 Newmart Street
    London W1P 3PE,   England 
  • Authors:
    • Nip, K F
  • Publication Date: 1975-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00132114
  • Record Type: Publication
  • Source Agency: National Safety Council Safety Research Info Serv
  • Files: TRIS
  • Created Date: Nov 9 1977 12:00AM