No problem I think it’s the same for most traction in the game not just HSTs. You always need to isolate all warning systems (you can leave DRA though) before switching ends. Oh ok, fair enough. To be honest, I forgot that you’re from Hong Kong. If you’re late by 5 seconds, the guard is apologising. In the UK, if you‘re only 5-10 minutes late, you should be happy Also, it is a very different culture between national rail and London Underground. Tube drivers (or Train Operators which is their official job title) are not mainline drivers and don’t have a train driver’s license. From my understanding, SPADs are very common on the London Underground. On the mainline, a SPAD is a massive incident. Similarly, the culture in BR is very different compared to today. If you had a SPAD back then, the signaller would call you a few swear words and you would be on your way. Today, however, a SPAD results in drugs and alcohol test, a serious investigation including potentially some time off, and it will go in your safety of the line record. If you have a few incidents in a short space of time, you’ll lose your license. From late BR (1990s) onwards, the culture has shifted.