Citation

Mcclintock M, Blanchard AH. Highw. Res. Board Proc. 1931; 1931.

Copyright

(Copyright © 1931, National Research Council (U.S.A.), Highway Research Board)

DOI

unavailable

PMID

unavailable

Abstract

A general statement of present status and research procedure suggestions are made on the following problems: (1) minimum specifications to assure adequate uniformity; (2) what conditions warrant traffic control signals; (3) relative efficiency of non-mechanical and mechanical control; (4) formula for cycle and internal lengths; (5) relative efficiency of various types of coordination; (6) economic cost of traffic delay; (7) uniform cost accounting method for traffic control signal installation; (8) administrative control of traffic control signals.