The Stovebolt Site Forums The Parking Lot Big Bolts air disc brakes, input wanted

I keep thinking I want a CDL. But its because I want to pull a heavy trailer weighting 10,000+ and I understand you need one to do that.

Why do they want you to have an air brake endorsement?. When I was a truck mechanic many years ago I'd frequently drive trucks with air brakes and I just don't remember it being that big a deal.

Isn't one of the good reasons for running air brakes the way they are designed so loosing line pressure applies the brakes? I didn't know there were air brakes that used air to apply instead of to hold off.

I knew I wasn't keeping up with the big truck stuff, but now I realize I'm further out of date than I imagined... But then I recently saw a restored truck at a show that was new back when I was a truck mechanic!

Guess I'll just stick with the old stuff.