The Layout and Planning Methods of Service Area in Arterial Highway

Service areas, which are used to ensure traffic safety, alleviate the long-distance driving fatigue and guarantee the vehicle maintenance, are important parts of arterial highway. According to the construction detailed planning of service area in arterial highway in Sichuan province, this paper confirmed the layout planning ideas and methods of service area, discussed the objectives and principles of layout planning and analyzed the service needs of driver and vehicle. Because the data of driving-into rate are controlled to obey normal distribution, the scale of service areas could be determined corresponding. A benefit model is used to set up logical distance between service areas based on the driving-rate and economic benefits.