Citation

Hoban CJ, Ogden KW. Transp. Res. Rec. 1980; 772: 51-54.

Copyright

(Copyright © 1980, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

The results of several field experiments conducted to measure changes in traffic performance caused by transitions from two to four lanes on rural highways are reported. Vehicle speed and bunching data were recorded at a number of points upstream and downstream of a transition. A microprocessor-based recorder unit and flat metal-and-rubber detector strips were used. The results show that changes in traffic performance with position occur more rapidly on entering a four-lane road than on merging into two lanes. The effects of a change in road quality at the transition were isolated. The results are applicable to the study of rural overtaking lanes and the validation of simulation models and may also be of interest in the study of rural transition points and temporary detours.