01660960

Component

A traffic system consists of a driver, vehicle and the travel environment. A natural way to mimic this real world system is to model the driver-vehicle-environment as a closed loop problem. However, the current microscopic traffic models attempt to solve this dynamic closed-loop problem as an amalgamation of open-loop. This leads to artifacts such as representing the vehicle and its dynamics as a part of the larger driver-vehicle unit and treating it as a single floating kinetic particle. The movements of these particles are largely governed by driver behavioral models such as car-following, gap-acceptance and lane-changing and a few user-specified vehicle characteristics such as desired and maximum/minimum speeds and acceleration. Such inexplicit treatment of vehicle and its dynamics will not allow for an accurate representation of the traffic system. An attempt to overcome this issue by modelling drivers and vehicles separately but with interaction between them is made in this paper. The proposed driver-vehicle integrated model takes into account the driver behavioral characteristics in the form of desire to brake and desire to throttle, the vehicle characteristics such as mass and the tractive force produced by the engine, and the surrounding environment in terms of aerodynamic, rolling, and grade resistances. The proposed model when tested with the field data performed satisfactorily.

This paper was sponsored by TRB committee AHB45 Standing Committee on Traffic Flow Theory and Characteristics.

18-06099

English

8p

2018

Transportation Research Board 97th Annual Meeting

Digital/other

Figures; References; Tables

Car following; Drivers; Motor vehicle dynamics; Occupant dynamics

Highways; Operations and Traffic Management; Vehicles and Equipment

Transportation Research Board Annual Meeting 2018 Paper #18-06099

TRIS, TRB, ATRI

Jan 8 2018 11:34AM