This paper proposes a novel protocol for reliable vehicles and nearby fixed equipments, usually referred to as broadcasting of life safety messages in Vehicular Ad-hoc Networks roadside equipment [3],[4]. The most important objective of (VANETs) simulating reactions of car drivers. In case of any VANETs is to increase the traveler safety [2],[4],[5]. dramatic change of speed or moving direction, the vehicle is considered abnormal and hence it transmits an emergency warning Considering one of

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... main critical VANETs' challenges, message over the control channel of the Dedicated Short-Range we develop a novel protocol for reliable broadcasting of time Communication Protocol (DSRC). The proposedprotocol gives the sensitive Life-Safety (LS) messages in VANET environments vehicle in the most dangerous situation the highest priority to that overcomes the shortcomings of existing protocols [6]transmit the acknowledgement signal. The choice of that vehicle is [13] (overviewed in Section III) and achieves very low done locally based on the location, direction, and speed of the latency and minimum channel busy time (CBT). receiving vehicle. The superiority of the proposed protocol over existing protocols is highlighted conceptually and with simulations. II. BACKGROUND