How to inspect air disc brakes on a daily basis?

What's the industrial standard for truckers to inspect air disc brakes on a daily basis? There's no way to confirm if it actually works unless you take the wheels off.

 

I'm not an expert but it's probably hard to do that without taking the wheels off.

 

Sure you can check that. But how do you confirm the caliper pistons are actually actuated when you press the brake pedal without taking the wheels off? There are many reasons the caliper pistons get seized.

 

good point.

 

Most are for the mechanic annual inspection where they take the wheels off.

Air Disc Brakes: You Can't Inspect What You Can't See