VANET networks consist of several vehicles communicate with each other or with road fixed stations in order to offer a secure collaborative driving environment with the help of broadcasting emergency messages. These messages play a significant role in road safety by warning vehicles of any potential danger. The work reported in this paper is to devise an efficient broadcast protocol fulfilling alert message requirements in the VANETs context. Reacting in time to these urgent events may be important for crucial situations like road accidents.Performance evaluation of our proposal EBAM is carried out through simulations with combination of VanetMobiSim and Network Simulator 2 and obtained results, in terms of loss rate, delay and reception rate of urgent messages, outperform those given by the two known referred protocols.