bramling
Veteran Member
View attachment 185820
I never really understand these "pathing allowances". I sort of assume they are some kind of padding introduced into the timings. However, often the allowance is much larger than any gap between timing points. Here for example, where does that 10 minutes go or come from? It's more than the 4.5 minutes allowed for between Bellingham & Catford, for example. The prediction for the late running train thinks it can get from BEC to CTF in one minute vs the 6 in the schedule but again that's less than 10. Is the 10 somehow spread over multiple points?
RTTT adds its own timing points on the day. If you look at the same schedule for a date in the future then the timings should make more sense.
Pathing time is time added because the normal running times would conflict with another service - either a slower moving service ahead, or at a junction. So in essence if everything is running as booked, the train with 10 minutes pathing time will incur an extra 10 minutes of signal checks between the two points. Or, if the conflicting service(s) aren’t running, then it will arrive 10 minutes early at the next timing point. Or in different circumstances if the train is running late then it could theoretically make up 10 minutes.

