Analysis Model for Operating Speed on Two-lane Secondary Highway

摘要

In order to improve traffic safety and reduce the rate of traffic accidents onrnthe flat curve of two-lane highway, this paper studied the operating speed of vehiclernin straight line and little radius. Through the speed experiment, we collected thernspeed that vehicle traveled on a flat curve, and then ensured the critical radius of therntwo-lane highway. Finally, the paper established the modeling of the element of flatrncurve and speed, the element of flat curve and side friction factor coefficient. Thernmodel can be applied in safety evaluate of two-lane secondary highway in ourrncountry. The improvement is considerable.