What are glad hands?
devices that are used to connect the service air line to the relay valves
devices that are used to supply air to the trailer air tanks
coupling devices that connect the service line and emergency line from the truck/tractor to the trailer/s
devices that are used to fix service and emergency air lines
Create a totally FREE account to save your progress and scores.
Exam Simulator
Welcome back
Let's continue studying where you left off.