Prohibitory
No U-turn
Do not make a U-turn at this location.
Common mix-up
↗ RTA handbook · 8th edition, p. 77A missed turn is not a reason to ignore the sign.
SHAPE. COLOUR. MEANING.
Recognise the sign, understand the instruction, catch the common trap.
Do not make a U-turn at this location.
A missed turn is not a reason to ignore the sign.
Schematic learning illustrations are not manufacturing specifications. Supplementary plates, road markings and context can change what applies. The linked handbook is an older edition; check current RTA materials.