From the 2009 Judging guidelines:
2.
DRIVER PARTICIPATION CLASS (DPC)
The AACA Board of Directors in 2000
established DPC to promote the showing
and driving of antique vehicles which are
not intended by their owners to be show
vehicles and are described as "Drivers."
This class is for vehicles 25 years of age or
older that have not obtained a national first
prize. (A vehicle with national awards is
eligible for DPC only if the awards - other
than 2nd or 3rd Junior - are turned into
AACA Headquarters.) This is a non-competitive
class and will not be point judged,
but vehicles will be certified upon passing
a visual inspection.
The shaded areas
on the DPC evaluation form must be
completed by the vehicle owner before
the vehicle can be certified. Certification
will be based on vehicle components that
have the same appearance as when the
vehicle was manufactured and the overall
condition of the vehicle in general appears
acceptable. The exterior/ interior/engine/
chassis components must appear period
correct per the original manufacturer. The
following are exceptions that will not disqualify
the vehicle: seat belts, seat coverings,
turn signals, stop lights, sealed
beam/halogen headlights, radial tires,
alloy wheels of the same era and/or same
vehicle manufacturer, radio upgrades,
electrical upgrades, brake upgrades (bolt
on), steering upgrades (bolt on), air conditioning,
overdrive system and altered
exhausts. A DPC badge will be issued
to each vehicle upon certification and a
participation award will be given at certification
and at each subsequent meet for
attendance. After five participation awards
are received, the accompanying participation
cards should be completed and mailed
to AACA Headquarters. A mounting board
will be mailed from AACA Headquarters
after confirmation of the five participation
awards. No vehicle will be re-certified if it
is not displaying the DPC badge. A DPC
certified vehicle that is significantly modified
will lose its’ DPC certification. DPC certification
remains with the vehicle even if there
is a change of ownership. (see Attachment
6 - DPC Evaluation Form - page 49).