Several studies that exploit cooperative V2V
communications to monitor the road traffic conditions have recently been published. In cooperative V2V communication
systems, vehicles periodically transmit broadcast beacons, also known as CAMs (Cooperative Awareness Messages), in order
to announce their presence to neighboring nodes providing information about their speed and location. Many of the
proposed techniques rely on the periodic exchange of specific packets (distinct from beacons or CAMs), that are not initially
considered within cooperative standards, and that are transmitted to estimate road traffic conditions beyond each
vehicle’s transmission range. The transmission of these packets should be carefully considered in order not to overload the
cooperative communications channel. An example of these techniques is the COC (Contents Oriented Communications) [1] proposal.