Rules and procedures (TRP)

Rules and procedures, often listed as TRP, means you learn a briefing, then close the page. You study a short written notice, or a simplified panel, then the text is taken away and you answer from what you held.

There are two common wrappers. Memory TRP is a procedure: speeds, wait times, switch names, and the conditions that change them. Dials and cables is the same idea attached to objects: what a lamp means, which switch isolates what, which gauge band is safe.

What they are measuring

Not whether you already know a TOC rule book. Whether you can take a new system, hold the rules, and apply them once the page is gone. Looking it up in the study window is not the same skill as answering when the questions start.

The usual failure modes

• Inventing a number you cannot remember. If you cannot recall a figure, do not invent a risky action.
• Answering from a vague sense of the story, and missing the condition that actually decides it.
• Forcing a connector or a move the briefing forbade.
• Carrying the last item's rules onto the next briefing.

Speeds, wait times, and switch names in that briefing belong to the briefing only. They are not real TOC policy. Core safety still applies: stop rather than guess a figure that would put people at risk.

How to practise

Read once for the structure, then again for the numbers. Write a tiny mental map: if X, do Y; if Z, stop. Then hide the page and answer.

On RailFocus, Rules & Procedures (TRP1) is the written briefing. Dials & Cables (TRP2) is the panel. Both close the study window before the questions. Easy RAAT still lets you look back. That is a different skill, and not a substitute.

This is not the official paper, and it is not a live traction course. Use practice so the first time you meet “study, then it is gone” is not the assessment day.