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Question:
Vehicles with air brakes are required to be equipped with a low pressure warning device. A wig wag is a type of low air pressure warning device. This device drops a mechanical arm into the driver’s view if the pressure in the tanks drops to a level between 55 and 75 psi. [California Commercial Driver Handbook]
Comments
Bruce Couch
1 year ago
great job!!! keep up the good work!!!
heavy hauler 1234
1 year ago
App was great for ILLINOIS CDL renewal test. Never had to open study book for a first try pass!
Sean Walton
1 year ago
I have just started using the app and immediately was very pleased with it. I look forward to see if this app will help me pass my CDL written test