Rear wheel shields.
75 Pa.C.S. § 4533
in effectEvery truck with a gross weight exceeding 11,000 pounds, trailer and truck tractor (without a semitrailer) driven on a highway shall be so constructed or equipped as to bar water or other road surface substances thrown from the rear wheels of such vehicle or combination at tangents exceeding 22 1/2 degrees, measured from the road surface, from passing in a straight line to the rear of such vehicle or combination. (Dec. 9, 2002, P.L.1278, No.152, eff. 60 days)
Source: Open US Law by Vaquill AI (CC BY 4.0)URL: https://www.palegis.us/statutes/consolidated/view-statute?txtType=HTM&ttl=75Fetched: 10/16/2026