King of the Highway: The Ultimate Big Rig & Semi-Truck Operations Challenge

What color represents the emergency air line gladhand coupling?

20%

Correct!

Incorrect!

On semi-truck configurations, the red gladhand represents the emergency air line (supplying air to charge the trailer air tanks and release emergency spring brakes), while blue represents the service brake control line.

What color represents the emergency air line gladhand coupling?

Bright Red

Cobalt Blue

Lime Green

Gloss Black

20%