A method for transmitting traffic information includes detecting an occurrence event by a first vehicle terminal; generating a traffic information message including information for the occurrence event by the first vehicle terminal; transmitting the traffic information message through vehicle to vehicle (V2V) communication by the first vehicle terminal; receiving and analyzing the traffic information message by the second vehicle terminal which drives in an opposite direction as compared to the first vehicle terminal; retransmitting the traffic information message to a third vehicle terminal located behind the first vehicle terminal depending on an analysis result of the traffic information message by the second vehicle terminal; and outputting an alert based on the event occurrence information of the traffic information message transmitted from the second vehicle terminal to the third vehicle terminal.