Integration of Advanced Driver Assistance Systems (ADAS) and Vehicle to Vehicle communication (V2V) provide a wide range of applications with the potential to enhance road safety and prevent traffic accidents. During the last few years, significant attention has been paid to developing and implementing both systems, since V2V and ADAS are considered as key technologies of future Intelligent Transportation Systems (ITS). Prior to the implementation of these systems on vehicles, comprehensive analysis through exhaustive and realistic simulations is vital. This paper presents the developed methodology to improve road safety by modelling and simulating different penetration rates of V2V and ADAS-ACC (i.e. percentage of vehicles which have been equipped with either system) on three developed simulation scenarios in SUMO and Scene Suite showing the impact on road safety.