Citation

Thomson GA. Accid. Anal. Prev. 1978; 10(4): 313-333.

Copyright

(Copyright © 1978, Elsevier Publishing)

DOI

unavailable

PMID

unavailable

Abstract

Priority rule systems at intersections have been compared using uncertainty, (the "receiver" related measure of the information presented by one of an ensemble of possible signals), as a measure of the safety value of the different systems. This has permitted quantifiable results to be obtained, (which are hypothetically derived without emperical observations), without having to wait for conflicts and/or accidents to determine the effectiveness of a system. The method was used to compare differences in the priority rules New Zealand had before and after the Traffic Regulations were altered on 1 February 1977. Ways in which uncertainty can be reduced are discussed with control signs being suggested, in conjunction with complementary signs on the main road, as extremely beneficial additions to the roadway environment.