A method for controlling a time for passage of a group of vehicles. The method comprises sending (100), by a first vehicle, an identifying signal to at least a second vehicle in the group of vehicles and receiving (200), by the first vehicle, a response signal from the at least second vehicle in the group of vehicles. The method further comprises determining (400) a time for passaging a certain point along a road for the group of vehicles based on the response signal, and communicating (600) the determined time to a roadside unit.
Corresponding apparatus, computer program product and system are also disclosed.