Someone help me on the technical explanations for air brake failure? I have no understanding of these systems but I was told that the systems are set so that it takes active air pressure to hold the brake system away from the rims and a loss of pressure causes the brakes to be applied tightly. This is a safety feature to prevent run away trucks if air pressure system fails.
I understand the loud puffing air noises you hear at the truck stops or rest areas is air being released (mimicking an air loss scenario) which applies the brakes.
How does it work that you lose air pressure and the truck starts rolling into the lake? The article said bystanders hear the air puff and then truck started rolling...?
