Periodic Smoke Inspection Program (PSIP)
The PSIP program requires that
diesel and bus fleet owners
conduct annual smoke opacity
inspections of their vehicles
and repair those with excessive
smoke emissions to ensure
compliance. The ARB randomly
audits fleets, maintenance and
inspection records and tests a
representative sample of
vehicles. All vehicles that do
not pass the test must be
repaired and retested. A fleet
owner that neglects to perform
the annual smoke opacity
inspection on applicable
vehicles is subject to a penalty
of $500.00 per vehicle, per year.
