All common carrier railroads operating in this Commonwealth shall comply with the provisions of § 33.91 (relating to regulations) with respect to motor vehicles used to transport railroad employes, whether or not on a public highway, to and from their place of employment or during the course of employment. Such vehicles shall be suitably equipped and maintained for the health, comfort, and safety of employes transported as provided in these regulations, except that in the event of emergency, if it appears necessary to transport railroad employes to a site by means of any available transportation, motor vehicles not designed to transport railroad employes may be used, or an unauthorized number of railroad employes may be transported in a motor vehicle, provided there is compliance with all of the following conditions:
52 Pa. Code § 33.92