**4.2.3 Traffic merge assistant**

The traffic merge assistant application allows the merging of cars in a joint traffic flow without the need to interrupt their smooth flow. When a vehicle enters a highway from an entrance communicates this intention to the neighboring vehicles. The vehicle entering the highway requires specific maneuvers by surrounding vehicles to adapt in a safe and continuous way to the traffic. If there are no objections from other drivers, then either the traffic will be adjusted automatically or advice will be given to the drivers on how to act. In this way the vehicle entering the highway can adjust smoothly into the flow of traffic without causing major disruptions to it. This application can be enhanced by using a RSU which can determine the movements of each participant.

This application, as shown in Figure 9, requires a significant number of vehicles to be equipped with wireless capabilities. Moreover, it is one of the most difficult and complex applications which is based on the harmonious and trustworthy co-operation among highly dynamic vehicles.

Fig. 9. Traffic merge assistant application.
