EPA'S In-Use Verification Program
(IUVP)
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Will my vehicle be mistreated in any way?
No, every aspect of the test program has been designed to duplicate everyday operation.
Exactly what will be done to my vehicle?
An underhood inspection and routine maintenance, if necessary will be performed prior to each
test. The vehicle must be completely cooled off before the test can begin. This requires that
the vehicle not be started for 12 to 36 hours to simulate overnight parking. Once the vehicle
is sufficiently cooled off, it will be pushed onto a dynamometer. Although the vehicle does not
actually move during the test, the dynamometer is a type of treadmill that simulates conditions
which would normally be encountered on the road. A hose is connected to the exhaust pipe to
collect the exhaust. A specially trained driver then starts the vehicle and "drives" it through
suburban and rural areas. Throughout this time, a portion of the exhaust gases is collected for
subsequent analysis. This analysis allows us to calculate the quantity of exhaust emissions emit-
ted by your vehicle. Values for the city and highway fuel economy are also calculated. Typically
2 to 3 of these test sequences will be performed on your vehicle.
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What happens if my vehicle fails to meet any emission standards?
We expect that a certain portion of vehicles will fail to meet one or more of the emission
standards. However, none of the information collected from this program will be used against
individual vehicle owners.
How will my monetary incentive be calculated?
You will be offered $20.00 per day and a loaner vehicle for every day your vehicle is at the
National Vehicle and Fuels Emission Laboratory (NVFEL). If you do not want a loaner vehicle,
you will be offered $50.00 per day. The compensation will be based on whole days, beginning
with the day your vehicle arrives. It will end one day after you are notified your car is ready for
return. If you do not wish to provide your social security number, you have the option to cap the
total incentive at $599.
Who may participate?
Anyone, except employees of Jacobs (the contractor) or EPA shall be eligible for consideration
as a candidate vehicle owner for the above mentioned program.
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