Abstract: The vehicles are moved in continuous manner in the same direction, on orders of a computer given only before their departure, fixing an itinerary optimized as a function of the congestion anticipated at each section of the network. The network comprises several one-way closed circuit routes, having common zones between convergent and divergent stretches, wherein each of said routes is traversed in one-way sense by guide-marking elements having between themselves, a controlled spacing called the pitch. In the zone common to any two of the routes, the marking elements have the same direction with an interconnected pitch P and speed V, and are shifted in the common zone, from one route to the other, and serve as pilots for the vehicles keyed on them by a servo system during their passage over one route. The vehicles possess a device permitting possible changing of the line of marking elements (hence of the route).