On-Track Machine Headcodes
Each on-track machine is usually allocated the same "headcode" when moving around the rail network. Here is a list of known headcodes so you can cross-reference them with timetable/movement information from other sources.
If you have any corrections or updates then please get in touch via the forum post about headcodes.
Some Crossrail moves run using headcodes 6Z01-6Z04 and 6Q01-6Q04 which conflict with grinders & Balfour Beatty tampers.