Traffic flow to pay the toll. In France launched in July 2000 (light vehicles) and January 2007 (Heavy Vehicles) - growing toll of 10% per year.
Partners : electronic tolls operators
Low impact : more than one liter of fuel saved by PL in each toll
All the traffic information services (cf Ile de France http://www.dir.ile-de-france.developpement-durable.gouv.fr/sirius-a119.html)