Abstract
In recent years, many new technologies for calculat ing travel time arose, but have never been evaluate d and compared to each other at the same time. These tech nologies depend on the type of system used to colle ct traffic data. The goal of this paper is to introduce an exp erimentation, which will compare technologies (inductive loops, automatic number plate recognition ‐ ANPR, magnetometer, blue-tooth, and three FCD/FMD systems) for calculating travel time. The travel time calcul ated by ANPR will be the reference of the evaluatio n of our systems. As a matter of fact, ANPR can identify unt il 90% of the traffic, which is therefore a very go od traffic representation. This trial will take place in Lyon East ring road, which DIR-CE is the road operator, on a 12 km distance with all kind of traffic : free flow, heav y traffic, regular daily congestion of 1-2 kilometr es at the end of the day. The Lyon East ring road traffic flow is 90 000 vehicles per day with about 10% of trucks. The installation of every technology will take place du ring the month of January with a two or three month ’s data acquisition after. It is planned to get five measur ements test points and to have so four elementary s ections. Among these road-sections, one of them doesn't pres ent crossroads : the accuracy can be then precisel y calculated with no disruption in travel time measur ements.
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