The present invention is directed to a system for controlling, in a moving vehicle, wireless communications between a local and a remote party and more particularly to prevent any conversation in vehicles travelling above a predefined speed without cutting off wireless communication. If a wireless communication is detected and if the vehicle speed exceeds a first predefined speed limit, the wireless communication is suspended. When the vehicle speed decreases below a second predefined speed limit, the suspended wireless communication is re-established. The system comprises a wireless communication manager unit connected to both a conventional mobile communication system and a conventional free hand kit, the free hand kit being also connected to the mobile communication system.