Driver Knowledge Tests

Do you need to slow down at road works if there is no posted speed limit?

If there are cones or signs that indicate road work is taking place or has taken place, do you need to slow down? The road works speed limit will be either 40, 60 or 80km/h, depending on the road and the extent of the road works. Minor work that has little or no impact on the lane (e.g. it’s on the shoulder) will result in much less impact than if one lane is closed completely.

However, if there are no speed limit signs, there is no requirement to slow down.

Just because there’s a road roller on the side of the road doesn’t mean you have to slow down

Speed limits variations are only enforced where there are clearly marked signs. If there is no sign, you can continue driving at the appropriate speed limit for that zone.

No speed limit sign at this set of road works controlled by traffic lights. Picture used with permission of Carlos ZGZ

Darren is an expert on driving and transport, and is a member of the Institute of Advanced Motorists

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