Dual carriageways: keep left
Route rules. Last checked 3 Nov 2026.
Some main roads are two roads side by side, with a central reservation between them.
Drive on the left one.
You may cross the central reservation only where a drawn road joins the two halves. That is the only gap.
Road-name lettering is never a gap, even when it seems to break the line. If in doubt, it's not a gap.
You can't make a U-turn through a gap.
3 map questions on this rule, free. The drill opens in our trainer.
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