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Revision question · Road and traffic signs
Revision material from the imported DVSA bank includes source-checked Lanekind learning corrections. These corrections are not newly issued official examination questions, and practice does not reproduce a live test paper.

This sign is shown where slow-moving vehicles would impede the flow of traffic; for example, in tunnels. However, if you need to slow down or even stop to avoid an incident or potential collision, you should do so.
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