Glossary of parking and mobility

INFORMATION DOCUMENTS OUR BROCHURES GLOSSARY

Some definitions are taken from the methodological guide "Parking surveys" published by CEREMA (November 1997, republished in October 2000).

Term	Definition
"Small mileage" fare	A colloquial term for a preferential rate for residents who do not regularly use their cars, meaning they make only a small number of trips per month. Additional trips beyond this quota are charged individually. This system was implemented in Lyon under the name " Subscription Domicile " in 1998.
Household car ownership rates	Ratio of the number of households owning at least one car to the total number of households in a given area. Not to be confused with the *household car ownership rate*.
Forbidden rate	Ratio between the instantaneous number of vehicles parked illegally, and the total number of vehicles parked (authorized and prohibited).
Occupancy rate	Ratio between the instantaneous number of vehicles in authorized spaces and the number of authorized spaces. This ratio can be calculated for each category of regulation: free, blue zone, rotating paid parking, etc.
Congestion rate	Ratio between the instantaneous number of parked vehicles (authorized and prohibited), and the number of authorized parking spaces.
FPS Rate	Ratio between the number of vehicles for which a parking fine notice (FPS) has been issued, and the number of vehicles parked in a paid space and not having a valid parking right ( hourly, subscription or exemption).
Household motorization rates	Average number of cars available to households. Not to be confused with the rate of car ownership among households.
Payment rate	Ratio between the instantaneous number of vehicles in regular parking and the number of paid parking spaces. This ratio combines the *occupancy rate* and the *compliance rate*.
Respect rate	Ratio between the instantaneous number of vehicles in regular parking, and the number of vehicles parked in paid spaces (excluding vehicles exempt from fees ) or in blue zones (disc zone).
Turnover rate	Ratio between the number of vehicles recorded parked in authorized spaces, over a given period, and the number of authorized spaces. See also *Turnover*.
Verification rate	Ratio between the instantaneous number of vehicles ticketed and the total number of vehicles in violation at the same time. For paid parking, since January 1, 2018, see FPS rates.
Search time	Average time taken to find an available authorized parking space, as well as the average distance between the destination and the space found. Search time provide useful indicators in areas that are saturated or nearing saturation.
Average ticket	Average price paid by motorists in a parking area.
Single title	A single payment ticket usable for one or more modes of transport, which may include access to one or more car parks.