The road vehicle comprises a communicating door (8, 9) in each of the front (3) and rear (4) transverse faces, a part at the front and a part at the rear of the split able connection that can combine with that of another identical or same-type vehicle respectively in front (5) and behind (6) so as to constitute a disconnect able articulated connection for aligning the vehicles and obtaining a short distance between the vehicles, a projection at the front or at the rear at the inter-vehicular passenger access, a course set point for the vehicle (6) behind using a system for directional control of the vehicle behind. The road vehicle is applicable to urban public transport vehicles which can form a road train.

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