Pennsylvania Code
Title 67 - TRANSPORTATION
Part I - Department of Transportation
Subpart A - Vehicle Code Provisions
Article VII - Vehicle Characteristics
Chapter 175 - VEHICLE EQUIPMENT AND INSPECTION
Subchapter L - ANIMAL-DRAWN VEHICLES, IMPLEMENTS OF HUSBANDRY AND SPECIAL MOBILE EQUIPMENT
Section 175.230 - Horns and warning devices

(a) Condition of horns and warning devices. All components of a horn or warning device shall be in safe operating condition as described in this subchapter.

(b) Horn and warning device requirements. A vehicle except a trailer, implement of husbandry and special mobile equipment not originally equipped shall have a horn or other warning device which is audible under normal conditions at distance of not less than 200 feet.