When doing a walkaround inspection of a double or triple trailer rig, what safety checks should be made regarding the converter dolly?

During a walkaround inspection of a double or triple trailer rig, ensuring that the air tank drain valves are closed and the pintle hook is latched is essential for safety and functionality. The converter dolly connects the trailers and provides stability during transit. If the pintle hook is not properly latched, there is a risk of disconnection while driving, which can lead to serious accidents. Additionally, if air tank drain valves are left open, it can lead to air pressure issues in the braking system, affecting performance and safety. Thus, checking these components ensures that the rig operates safely and effectively on the road.

While checking lights, tire pressure, and weight distribution are important safety checks, they are secondary to ensuring that the critical connection between the dolly and the trailers is secure and that the braking system is functioning properly. This is a foundational safety practice for drivers of double and triple trailer configurations.