Agent B-7

There are three main brake timing options (in Germany, Poland, Austria etc, but could be different otherwise): T or G (Towarowy/Güter, freight), P (in the past, passenger, now mostly fast freight), and R (rapid, fast passenger, but now basically any passenger). This determines how fast the brakes are released after pressurizing the main line on the locomotive and affected cars. The point is to delay the release on the front of the consist to make the release moment closer to the end of the consist, to make the brake release more uniform. No, not sure if the Polish valves are any different, but in German context, the Fast Release (Fill) position is venting the main res to the brake line but doesn't intentionally overcharge over 5 bars, the relief valve is still active and will prevent excessive pressure. The point is to get the line to 5 bars ASAP. Brake overcharge/assimilation gets the pipe pressure above 5 bars (in Germany the typical limit is around 5.5), and the point is to not just release the brakes on the whole consist, but also fully charge auxiliary reservoirs on all the cars (that feed the brake cylinders on cars, they charge only when the brakes are fully released).

I use it to unlock the pneumatic traction lock on the locomotives that have it. Allows to apply the power while the rear of the train is still releasing the brakes, helps with hillstart etc (the brakes in the back will be eventually released and you already have some traction). Another thing is if you're switching and the brakes are in the T/G mode. If you intend to use only the local brake, you can keep it there and release the first time quickly with it. I know Americans use the independent brake bail to modulate the brake force or to use only dynamic brake on the loco itself, but it's definitely not intended use in Europe.

A mix of mistranslation (?) and weird ČD 163 controls. By "put the lever in the driving position" it means "release the brakes/charge the brake line to 5 bars". In most trains it means indeed putting into the running position, but on ČD 163, essentially the lap and the driving position are the same (the brakes are electronic), so you just need to hold it in release until the line is fully charged.

In the single player scenario on Katowice - Sędziszów "[Cargo] Coal Mine Operations", after departing from Staszic KWK, the entry signal Y25-2 to Katowice Muchowlec KMB is stuck at S1 (closed). The radio is set up correctly, calling the dispatcher attempted. There doesn't seem to be any traffic that could affect this. The screenshot and the log attached. Seems to be reproducible, first time happened when I was a bit behind the timetable, the second time - ahead of it. SimRail_log_2026-02-19_18-13-58.txt