Alexis BACELAR, CEREMA
– Since 1st January 2015 Project manager in mobility and safety : evaluation of reserved lanes and occupancy sensors. Involvement in writing various guides with the aim of improving the efficiency of the transport system and increasing the occupation of vehicles with the prospect of environmental gains.
– March 2003 Engineer in traffic management at CERTU in Lyon. Studies in traffic
– December 2014 management. Tests of dynamic equipment (new sensors, variable message signs) and new technologies in the data transmission. Head of different projects concerning urban mobility, new traffic sensors development, setting-up of new variable message signs.
– September 1997 Researcher in public lighting at CETE Normandie-Centre in Rouen.
– February 2003 Research in visibility models, influence of lighting on safety of road users, influence of fog, new materials to improve road legibility and to do energy savings.

This study reports the first European evaluation of a vehicle occupancy sensor on a high traffic highway. Until 2013, no road side control system was able to detect occupants in vehicles with the level of efficiency and reliability required for automatic control of High Occupancy Vehicle (HOV) lanes. Non accurate Vehicle occupancy verification is the principal impediment to more effective HOV lane enforcement. A system measuring the vehicle occupancy, was evaluated on the two lanes of the A86 motorway in Paris. The predictions of the automatic vehicle occupant detection system are accurate at more than 90 % for detecting Single Occupancy Vehicle. The lessons of this experimentation will make it possible to develop carpooling infrastructures.