In vehicular networks (VANETs), the priority of safety applications is always important. However, many cases such as the priority of vehicle type in the green wave coordination or the time to leave coverage zone in vehicle-to-infrastructure (V2I) communication are also essential and should be considered. In this paper, we propose a multipolling mechanism for channel access for V2I communication based on a multi-criteria priority taking into account the priority of special vehicles. The simulation results show that the proposed mechanism can solve some inherent problems in VANET, reduce network delay and packet loss ratio.

VANET, V2I, multipolling mechanism, priority-based.