West of El Paso, where should you place an empty multiplatform spine car in your manifest train?

• A. After all loaded cars.
• B. At the very front of the train.
• C. Behind the locomotive.
• D. Behind a car with no more than 4500 tons.

Answer: (D)

The idea being tested is safest car placement based on weight distribution and train handling. An empty multiplatform spine car is light and can be sensitive to slack action and coupling forces. Placing it behind a car that weighs no more than 4500 tons helps balance the train’s draft and braking forces so the spine car isn’t subjected to excessive or abrupt forces. This position helps maintain smoother slack control, protects the spine car’s equipment from undue stress, and improves overall stability on routes west of El Paso, where weight distribution and braking performance are especially important. Placing the empty elsewhere would increase the risk of rough handling or equipment stress during acceleration or braking.