24. When equipment is pushed, a locomotive crew member or a signalman must be on the leading car or near it. That person must observe the track and, if necessary, give the locomotive engineer signals and instructions to control the train movement.
If the engineer uses a portable locomotive control device, he may himself be on the leading car or near it.
Alongside a public highway not protected by a fence or a gate, the person on the leading car or near it must warn users who cross the track or are going to cross it that equipment is arriving.
The requirement provided for in the first paragraph does not apply when equipment is brought into a building intended for unloading scrap metal.