The Sno-Train’s power car and 3 cargo cars have square axles in front. These square axles were responsible for steering the Sno-Train and the cargo cars behind it. However, only the control car had an active role in steering. The Sno-Train used a 120 volt, 3 phase Alternating Current (A/C) electric motor, which connects to a large steering gear, turning the axle. As the control car turned, the cargo cars would follow, or track, right behind it with amazing accuracy.
The rear axles on the control car do not have the ability to steer. However, they can move up and down to ease the cabin and cargo movements over uneven terrain.
Sno-Train control car schematic. Image: O&M Manual 
Sno-Train cargo car steering pivot denoted by a “K.” Image: O&M Manual
