Current through Register Vol. 54, No. 44, November 2, 2024
(a)
Condition of exhaust system. All components of the exhaust
system shall be in safe operating condition as described in §
175.110 (relating to inspection
procedure).
(b)
Exhaust
system requirements. A vehicle specified under this subchapter shall
be constructed, equipped, maintained and operated to prevent engine exhaust
gases from penetrating and collecting in any part of the vehicle occupied by
the driver or a passenger, in addition to the requirements of this title for
emission control systems and smoke control for a diesel-powered vehicle.
(1) A vehicle specified under this subchapter
shall be equipped with a muffler or other effective noise-suppressing system in
good working order and in constant operation. A muffler or exhaust system may
not be equipped with a cutout, bypass or similar device, and a muffler may not
show evidence of external repair.
(2) The exhaust system of a vehicle may not
be modified in a manner which will amplify or increase noise emitted by the
motor of a vehicle above the maximum level permitted by Chapter 157 (relating
to established sound levels).
(3)
Headers and side exhaust are permitted if the vehicle meets the requirements of
this section.
(4) An exposed
exhaust system shall be equipped with an adequate heat shield or protective
system.
(5) An exhaust system shall
extend and discharge completely to the outside edge of the vehicle body,
including a truck bed, or as originally designed, except for the following:
(i)
Gasoline powered buses, including
school buses. The exhaust system of a bus powered by a gasoline engine
shall discharge to the atmosphere at or within 6 inches forward of the rearmost
part of the bus.
(ii)
Buses, including school buses, powered by fuels other than
gasoline. The exhaust system of a bus using fuels other than gasoline
shall discharge to the atmosphere either at or within 15 inches forward of the
rearmost part of the vehicle; or to the rear of all doors or windows designed
to be opened, except windows designed to be opened solely as emergency
exits.
(c)
Exemption. A firefighting vehicle is exempt from this
section.
The provisions of this §175.105 amended under the Vehicle
Code,
75 Pa.C.S. §§
4103,
4301,
4501,
4521 and
6103.
