{"product_id":"railway-signal-identification-signs-id-plates-free-download","title":"Railway Signal Identification Signs (ID plates) - Free Download","description":"\u003cp\u003eRailway Signal Identification Signs (ID plates) OO\/O\/TT:120 - \u003cbr\u003eAdd To Checkout And An Email Copy Will Be Sent Automatically Free Of Charge\u003c\/p\u003e\n\u003cp\u003eRailway signal identification signs (ID plates) in the UK display specific alphanumeric\u003cbr\u003ecodes mounted on or near signal posts to identify the signal box, line, and individual signal.\u003cbr\u003eHow Signal IDs Are Structured\u003cbr\u003e• Prefix Code: The first letters (two or three letters) represent the controlling signal box (e.g., AJ or TY).\u003cbr\u003e• Signal Number: The following digits identify the specific signal:\u003cbr\u003e • Odd numbers are typically used for trains running in one direction.\u003cbr\u003e • Even numbers are typically used for trains running in the opposite direction.\u003cbr\u003e • Numbers on the same track usually increase by at least two\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eCarefully Cut Out\/And Install On Or Near Signal Posts\u003c\/p\u003e","brand":"West Hill Wagon Works","offers":[{"title":"Default Title","offer_id":57515757142391,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0938\/4175\/2439\/files\/Screenshot2026-10-06181920.png?v=1791307173","url":"https:\/\/westhillwagonworks.co.uk\/products\/railway-signal-identification-signs-id-plates-free-download","provider":"West Hill Wagon Works","version":"1.0","type":"link"}