关键词：通信；无线通信；信息系统；混合动力；短距离通信；可变信息标志
摘 要：Congestion and hazardous traffic situations for the drivers on the road can occur around work zones and snowplow operation during the winter season due to low visibility. An information warning system for such environments can improve traffic mobility and thereby driver safety. Intelligent transportation systems (ITS) and other related technologies are being aggressively pursued to devise such automated traffic-information systems. Dedicated short-range communication (DSRC) has been considered as a key enabling wireless communication technology to realize such automated traffic warning systems. DSRC-based traffic-information systems use vehicle-to-vehicle (V2V) and/or vehicle-to-infrastructure (V2I) communication using DSRC technology to acquire and disseminate travel safety information. To take advantage of the disseminated information messages, a vehicle needs to be equipped with DSRC technology.