Traffic Management System(TMS) is proposed to improve the traffic efficiency and minimize traffic congestion problems. Such applications are supported by Vehicular Ad Hoc Networks (VANETs). However, the data dissemination in VANETs is a challenging task due to the short-range communication and node mobility. Therefore, Metrics of Complex Networks based Data Dissemination (MCDD) scheme is proposed in this paper. In MCDD scheme, each vehicle has contextual knowledge of 2-hop neighbor to select the relay node based on two complex networks metrics, the betweeness centrality and degree centrality, in order to decrease the overhead and delay. Compared with Fully-distributed Traffic Management System(FTMS) based on districts, vehicle traffic congestion time of MCDD scheme is reduced by 18.11%, and the speed of vehicle is increased by 8%.