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Whether you are learner driver or an experienced motorist, you can email any driving-related question to info@wycombedrivingschool.co.uk and you will receive a personal response from Wycombe Driving School boss Audrey Wixon, pictured. The best questions and answers will be published on this website anonymously.

Audrey is a DSA ADI; DIAmond, IAM and RoSPA Gold Advanced Driver; Fleet Trainer; Observer for Institute of Advanced Motorists; & National Standard cycling instructor

Audrey Wixon - manager of Wycombe Driving School
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Why don't all 30mph roads have speed limit signs?

Q: Why is it that in some roads where the speed limit is 30 you get little signs reminding you and in other roads you get nothing? Maybe if there were more reminder signs fewer people would get caught speeding.

thirty mph sign A: If a single carriageway road has street lighting, a 30mph limit automatically applies unless there are road signs telling you otherwise.

So 30mph repeater signs only appear in 30-zone roads where there are no street lights. They must appear in these roads at regular intervals by law but in street-lit roads, the lamps are supposed to be a sufficient reminder that the limit is still 30.

You may feel that having signs up in every road would make the situation clearer but can you imagine how much it would cost to install repeater signs up and down the country in every street lit road with a 30 limit?

If you are driving down a road and you are not sure if the speed limit is 30 or not, an easy way to check is to look down some side roads. Side roads are normally 30mph roads, so if you were on a 40mph road, for example, the side roads should have speed limit signs at their entrance announcing a change to 30mph. If you can’t see any signs in the side roads then you are probably safe to assume that the road you are on is also a 30mph road.
Audrey Wixon
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Wycombe Driving School - for driving lessons in High Wycombe and surrounding areas - including Amersham, Beaconsfield, Marlow, Hazlemere, Stokenchurch and Princes Risborough. We offer successful, structured driving lessons, providing free theory test software and lesson handouts. Male and female driving instructors are available, providing both manual and automatic driving lessons.