Citation

Cunagin WD, Chang ECP. Transp. Res. Rec. 1982; 869: 54-59.

Copyright

(Copyright © 1982, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

The results of a study to determine the effects of the presence of heavy trucks on traffic flow in sections of freeway as an operational measure of total throughput capacity are presented. The variable used to evaluate truck impacts was time headway. Data were collected at two sites on the Houston, Texas, freeway system during off-peak flow conditions. After each observed headway had been classified as to types of vehicles involved in the interaction, various statistical tests were performed to analyze variations in headway due to headway type, lane width, and traffic volume. Headway type (i.e., the types of vehicles involved in the headway interaction) was shown to be the major determinant in length of the headway; those that involved trucks exhibited the greatest magnitude.

Language: en

Keywords

HIGHWAY TRAFFIC CONTROL; MOTOR TRUCK TRANSPORTATION; TRAFFIC SURVEYS - Texas