Citation

Ahn S, Vadlamani S, Laval J. Transp. Res. C Emerg. Technol. 2013; 34: 138-147.

Copyright

(Copyright © 2013, Elsevier Publishing)

DOI

10.1016/j.trc.2011.05.020

PMID

unavailable

Abstract

This paper investigates the hysteresis loops commonly observed in freeway traffic flow by analyzing the evolution of speed-spacing relationships as vehicles undergo stop-and-go oscillations. The measurement method is based on the kinematic wave model with variable wave speed to account for non-steady state conditions that arise during acceleration/deceleration. We find that hysteresis takes place less frequently and in smaller amplitude than previously thought.