Patent ID: 8907813

Claim:
A method for improving traffic safety using beacons located at different points of a road network, the method comprising: wirelessly transmitting from each beacon a message including a respective identifier (ID B ); receiving, at a terminal installed in a vehicle circulating in the road network, the message from a given one of the beacons including its identifier (ID B ); once the terminal receives the message from the given one of the beacons, transmitting from the terminal to a mobile telephony network an identifier (ID TE ) of the terminal and the identifier (ID B ) received from the given one of the beacons; in the mobile telephony network, calculating an average speed of the vehicle based on: an entry time in a register database of the identifier (ID B ) of a current beacon and an entry time of the identifier (ID B ) of a previous beacon which the vehicle has passed; and known distances between the current beacon and the previous beacons; in the mobile telephony network, determining a speed limit allowed for the vehicle at a point of the road network in which the vehicle is located; from the mobile telephony network, sending a speed limit message to the terminal in dependence upon the determined speed limit; once the terminal receives the message from the given one of the beacons, determining a distance (D s ) between the vehicle and a second vehicle located in front of the vehicle and transmitting the distance (D s ) to the mobile telephony network; in the mobile telephony network, determining a safety distance the vehicle has to maintain from vehicles ahead of the vehicle at said point of the road network; from the mobile telephony network, sending the safety distance to the terminal; and upon determining that the safety distance exceeds the distance (D s ), transmitting a distance warning message to the terminal indicating that the safety distance exceeds the distance (D s ).