"No Right Turn" symbol on map-type direction sign

Tue, 4 Nov 2025 16:46:17 GMT

Map-type direction signs can incorporate a No Right Turn symbol in a route arm, as per S12-20-19.

The description for this item is "No right turn at all times". In the Variants section, we are told that "The symbol may be reversed". Well, naturally, for a No Left Turn.

But the description remains "No right turn at all times".

Is this an error in TSRGD? Looks like it should've expanded on the description or given us a separate item for the No Left Turn symbol, just as we have for the regulatory signs to Diag 612 and 613.

Tue, 4 Nov 2025 18:33:26 GMT

An error? Yes but not a show-stopper I think. Although if you wanted to be really pedantic about it, checking with DfT as to whether or not a sign incorporating a "no left turn" would need authorising would be sensible. This would be particularly the case if the sign carrying the NLT was the only sign showing such prior to/at the junction in question. No one would want it challenging in court.

Other symbols which are directional show the variants and have the text adequately worded to cover all uses.

Wed, 5 Nov 2025 07:37:58 GMT

Definitely an oversight. The intention of the author is explained in Schedule 12 Part 20 items 5 & 6; so a drafting error.