Citation

Pan Y, Kerali H. Transp. Res. Rec. 1999; 1695: 34-41.

Copyright

(Copyright © 1999, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

10.3141/1695-07

PMID

unavailable

Abstract

Research was conducted on the effects of nonmotorized traffic flow on motorized vehicle speeds on the basis of field observations of vehicle speeds on Chinese roads. A linear relationship was observed between motorized vehicle speeds and nonmotorized traffic flow under a range of motorized traffic flow volumes. By using the relationships of non-motorized flow effects obtained in this study, together with free speed and speed-flow relationships investigated in other studies, a general congested speed model for predicting vehicle speeds under various road characteristics and traffic flow volumes has been developed. The generalized speed-flow model can be incorporated into the three-zone speed model used in the Highway Development and Management (HDM-4) model.

Language: en