Research on Length of Acceleration Lane for Large Vehicles on On-ramp of Interchange
Whether the design of the acceleration lane length is reasonable is very important to the safety of vehicle operation.In order to improve the rationality of the acceleration lane length design on the on-ramp of interchange and the safety of the vehicle operation,by analyzing the traffic characteristics of the vehicles in the merge influence area,based on the modified second-order Erlang time headway distribution model,the calculation model of acceleration lane length for the large vehicles at different slopes(-2％≤i≤2％)and different specific powers(8～12 kW/t)is built to study the length of acceleration lane for the large vehicles under the different slopes and different specific powers.The research shows that the slope,the specific power and the length of the acceleration lane are all proportional,which can provide a reference for the revision of the relative specifications on the length of the acceleration lane at expressway interchanges for large vehicles.
large vehiclesinterchangesacceleration lane lengthslopespecific power
NETL
NSTL
万方数据
维普
