TY  - JOUR
PY  - 2013//
TI  - A method to account for non-steady state conditions in measuring traffic hysteresis
JO  - Transportation research part C: emerging technologies
A1  - Ahn, Soyoung
A1  - Vadlamani, Sravani
A1  - Laval, Jorge
SP  - 138
EP  - 147
VL  - 34
IS  - 
N2  - 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.<p />
LA  - en
SN  - 0968-090X
UR  - http://dx.doi.org/10.1016/j.trc.2011.05.020
ID  - ref1
ER  -