Tunnel for mounting above a road surface

A tunnel mounted above a road surface, the tunnel comprising:

• a plurality of tunnel segments;
• a plurality of projectors, at least one projector of the plurality of projectors being mounted in each of the tunnel segments, the projectors being adapted for displaying at least one virtual element onto the road surface within the tunnel, wherein projection surfaces of successive projectors are seamlessly contiguous or at least partially overlap on the road surface within the tunnel;
• a first position detection system disposed in the tunnel, the first position detection system comprising three first receivers adapted for receiving a signal from a transmitter mounted on a vehicle passing in the tunnel, the first position detection system being adapted for deriving first position data for the vehicle in the tunnel based on the signal received at the at least three first receivers;
• and
• a second position detection system comprising a transmitter and a second receiver, the transmitter being adapted for transmitting an optical signal toward the vehicle, the second receiver being adapted for receiving a reflection of the optical signal reflected by the vehicle, the second position system being further adapted for deriving second position data for the vehicle, the second position data comprising a distance between the vehicle and the transmitter and/or a distance between the vehicle and the second receiver, the second position data being derived by time-of-flight measurement of the optical signal and of the reflected optical signal;
• and
• a central controller being in communication with the first and second position detection systems, the central controller being adapted for receiving the first and second position data for the vehicle from the first and second position detection systems and to alter at least one of a position and an appearance of the at least one virtual element displayed onto the road surface based on the first and second position data for the vehicle.