Coupling and towing devices used in tandem trailer operations shall comply with 49 CFR Part 393 , Subpart F (relating to coupling devices and towing methods).
67 Pa. Code § 601.106
Coupling and towing devices used in tandem trailer operations shall comply with 49 CFR Part 393 , Subpart F (relating to coupling devices and towing methods).
67 Pa. Code § 601.106