I. Introduction
New transport alternatives are emerging in urban areas, offering both new services, like personal vehicles available in free-access, and environmental assets since proposed vehicles rely on electrical technology. Such transportation systems, completing the public transport offer (train, bus), however lack the same advantages to fight against traffic congestion, which appears a crucial issue in the urban environment. In this context, an automatic and cooperative navigation according to a platoon formation represents an attractive functionality, since on one hand it can improve safety and fluidity in the traffic, and on the other hand it can ease maintenance operations (e.g. to guide a group of vehicles to some station in one journey). Platooning is therefore considered in this paper and three points of special interest are investigated more particularly.