Vehicular Ad hoc Network involves the movement of vehicles and the communication between them for their security. VANETs have many application areas. One of main applications of VANETs is to improve the driving safety. In various safety related applications, vehicular nodes constantly communicate with roadside equipments. Road Side Units (RSUs) can sense the real time information about road conditions, animals straying and road blocks and passes all this hazardous related information to the vehicles approaching in its range. These alert messages enable the driver to take timely decisions in preventing from accidents or delays in information delivery. In this paper, Enhanced Direction based Hazard Routing Protocol and Ad Hoc On-demand Distance Vector protocols are used to avoid prevent vehicles from collision and to increase the coverage range of VANETs. These issues are resolved by bypass routing and a synchronized clock maintained with the RSUs respectively. To solve the issues and make the system more reliable we propose the roadside wireless sensor nodes along with vehicular nodes in the network. The RSUs are fixed at some distances and communicate with wireless sensors attached at vehicular nodes.