Research On The Scientific Layout And Logical Scale Of The Expressway Service Area

Service areas are indispensable basic facilities of the freeway.Since research works about the layouts and designs of the service areas in our country start later thanthe other countries,and there are no related criteria but mostly with reference to other countriesparticularly Japan,there are a lot of problems existing in setting up the distance and scales.This paper proposed how to set up logical distance to meet the demands of vehicles and passengers based on the driving-rate and economic benefits,at the same time,thispaper optimized the principles of the service area locations.Then,this paper confirmed the overall scale of the service areas,construed all the parameters for every parking area,including the selection of traffic stream,the prediction andconfirmation of the driving-into rate,the confirmation of the peak rate and the turnover rate andso on,used the queuing model to plan the parking spaces,and also proposed a logical method to decide the other areas. Finally based on the travel rules, determined the activities'chain,puts forward the optimization method for facilities layout of Service areas.