Citation

Berry DS, Pfefer RC. Transp. Res. Rec. 1986; 1091: 78-86.

Copyright

(Copyright © 1986, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

topped delay calculations were made for many combinations of cycle length, ratio of effective green time to cycle length (g/C ratio), and quality of signal progression, to aid in the following: identifying the relationships between computed delay and volume-to-capacity (v/c) ratio for lane groups at signalized intersections; determining how to solve for v/c ratio and service flow rate when the desired level-of-service (LOS) delay value is known; examining methods for using the delay-based LOSs in intersection design, both geometrics and signal timing. Sensitivity analyses reveal that many combinations of long cycle lengths, low g/C ratios, and adverse progression result in such high delays that LOS levels of A, B, and C are unattainable, even at low v/c ratios. Computer-generated tabulations are proposed to aid in solving for v/c ratios and maximum flow rates associated with desired delay-based LOSs.

Language: en

Keywords

HIGHWAY SYSTEMS; MATHEMATICAL TECHNIQUES - Sensitivity Analysis; HIGHWAY TRAFFIC CONTROL - Computer Applications