Section 157.1. Purpose

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(a) Purpose. This chapter prescribes procedures for inspection, surveillance and measurement of motor vehicles operated on a highway to determine whether those vehicles are constructed, equipped, maintained and operated to conform with the established sound levels in § 157.11 (relating to vehicular noise limits).
(b) Exceptions. This chapter does not apply to:
(1) Fire equipment.
(2) Racing vehicles which are operated in an organized racing or competitive event conducted under a permit issued by local authorities.

                    
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