It's Friday!!!!

[Tishimself]

The engines use dynamic brakeing and the air supply is retarted strong. Every car has air tanks on them also. There is full shot on each car on demand.

Well, yes and no. Main air pressure for the main pipe on freight is 90psi, on passenger it's 110...main reservoir pressure is 125-140psi. I do not need dynamics to stop a train, I can do it with stretch braking, and maybe a small shot at the end. All engines, every one of them, has a compressor and a it's engaged at all times. Some are shaft driven, others are electrical, and computer driven. Depends on the the model and the year built. I have no control over them, they do as they please. As for the cars, each has a tank, and that is always charged 90psi. It is the ABSENSE of air, that sets the brakes....as in this diagram...