A transportation system, including a network of roads for traveling to and from various destinations, a plurality of vehicles for transporting passengers, each vehicle situated within the network of roads, and each vehicle including a power supply, a positioning system, for identifying the position of the vehicle, a transmitter, coupled with the positioning system, for transmitting position and velocity information of the vehicle to other vehicles in its vicinity, a receiver for receiving position and velocity information from other vehicles in the vicinity of the vehicle, and an automatic steering system, coupled with the receiver, for steering the vehicle through the network of roads without collision, in order (i) to travel to a destination designated by the at least one passenger, when the vehicle is transporting the at least one passenger, (ii) to travel to a source for picking up the at least one passenger, when the vehicle is empty and the power supply is not low, and (iii) to travel to an available docking station, when the vehicle is empty and the power supply is low, and a plurality of docking stations, each docking station situated at a roadside of the network of roads, and each docking station including a charger for charging the power supply of a vehicle that is docked at the docking station.