What is the maximum rated powered axles (RPA) for trains made up entirely of intermodal equipment?

The maximum rated powered axles (RPA) for trains made up entirely of intermodal equipment is 48 axles. This is because intermodal trains are specifically designed to transport containers and trailers, which allows for a higher number of powered axles compared to other types of freight trains. Intermodal consists benefit from efficient propulsion and braking performance due to the nature of their operations, enabling longer trains with more powered axles.

Trains with a greater number of powered axles can efficiently manage the weight and length, thereby improving overall traction and reducing slip when starting or climbing grades. The structure and coupler design in intermodal trains accommodate this configuration, thus allowing them to reach the higher axle ratings set for such operations.