Home › CDL Practice Tests › Combination Vehicles Questions › Question 247
What is the correct role and routing of safety chains on a converter dolly connection?
- A.Chains carry the normal towing load so the pintle hook can rest
- B.Chains should be wrapped around the air lines for support
- C.Chains connect the dolly (and the towed unit) to the towing unit as a backup, crossed or attached so they can catch the drawbar if the main coupling fails, without dragging or binding
- D.One loose chain dragging on the ground is acceptable
Correct answer
C. Chains connect the dolly (and the towed unit) to the towing unit as a backup, crossed or attached so they can catch the drawbar if the main coupling fails, without dragging or binding
Why
If the pintle or eye fails, the chains are the last thing keeping the towed unit attached and its drawbar off the pavement. They must be sound, correctly attached, and slack enough to turn but not to drag.
Manual topic: Combination Vehicles - Coupling and Pintle Hook · From the Combination Vehicles practice bank (CV-247).