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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.

3C––

3Z––

4Q––

6J––

6L––

6Q––

6R––

6T––

6U––

6X––

6Z––

7J––

7Z––