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Abstract: This paper presents an experimental implementation of a shared vehicle longitudinal controller at low speed. The main objective is the increase of traffic capacity while improving safety and comfort. The longitudinal control method used is based on a second order sliding mode technique. The central controller is based on the management of inter-vehicular spacing in relation to vehicle speed. Results are presented both by simulation and by use of an experimental process with a vehicle prototype which is equipped with the required sensors and actuators. A number of scenarios are tested under usual traffic conditions such as stop-and-go, stopping at obstacles and car-following with merging/overtaking. Finally, the positive impact of such a system is given in terms of traffic capacity enhancement and collision gravity reduction. [Copyright &y& Elsevier]