01024826

Component

Although much knowledge about traffic characteristics was achieved, very little attention has been paid regarding behaviors of motorcycles, a major transportation means in developing countries in Southeast Asia. The purpose of this study addresses a model framework of motorcycle's decelerations in queues during red lights at signalized intersections. For motorcycle traffic, since motorcycles may not be assigned well-defined lanes as four-wheelers may, the adapted definition of a motorcycle's lane has been introduced to identify the proper leader of a given motorcycle. Then, a motorcycle's decelerations are treated similarly to a car's by applying deceleration models with some modifications. Two regimes in the deceleration model are proposed: the free-deceleration regime and car-following regime. In the free deceleration regime, a motorcyclist is assumed to decelerate freely until it stops completely at the end of the queue or at the stop-line, while in the car-following regime, he is assumed to follow his leader. At every observed interval, the particular regime is specified by a longitudinal threshold distance. That threshold is estimated based on the kinematic concept, the function of speed and deceleration rate. Moreover, the distribution of reaction time for the motorcycle population is also developed. The longitudinal threshold distance and reaction time capture the variations over motorcyclists. At the end, a case study is introduced to estimate the parameters of proposed models using microscopic traffic data collected at an intersection in Hanoi, Vietnam. The finding from this research may be used to acquire new procedures for estimating motorcycle's behaviors as well as for developing a motorcycle simulation model.

01020180

06-1969

English

21p

2006

Transportation Research Board 85th Annual Meeting

Digital/other

Figures (6) ; References (11) ; Tables (1)

Deceleration; Following distance; Mathematical models; Motorcycle driving; Red interval (Traffic signal cycle); Signalized intersections

Highways; Operations and Traffic Management; I73: Traffic Control

Transportation Research Board Annual Meeting 2006 Paper #06-1969

BTRIS, TRIS, TRB

Mar 3 2006 10:50AM