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With the coming of intelligent vehicles and vehicular communication, Intelligent Transportation Systems (ITS) of connected vehicles are emerging and now evolving to Cooperative ITS (C-ITS), as service platforms for smart cities. Considering new service properties, the autonomous cooperation of such vehicles has exhibited novel QoS features that imply new requirements: guaranteeing the traffic efficiency of any emergent vehicle while trying to promote the throughput at an intersection. So, after analyzing the classic reservation-based cooperation mechanisms, new QoSoriented cooperation methods and policies are studied in this work. Concretely, several models of related traffic objects are firstly introduced in brief. On this basis, two groups of fundamental policies are designed. The first focuses on scheduling vehicles with different priority criteria, covering the vehicular arrival-time, priority mapped to QoS, and the weight of a lane etc. The second mainly concerns to improve the traffic efficiency at an intersection via promoting the parallelism of multiple traffic flows, particularly, at any time scheduling a platoon rather than single vehicle or parallelizing traffic flows on different lanes. With these fundamental policies, five novel cooperation polices are then proposed and designed. All these policies and other three typical policies are implemented within our parameter-configurable traffic simulator QoS-CITS (v2.1) as shown in Figure 1.

Service-Oriented Cooperation Policies for Intelligent Ground Vehicles Approaching Intersections