Cars are now so powerful and comfortable they give you little sensation of speed, so it’s easy to exceed the limit without realising it. This is particularly true when coming on to a lower speed road after driving on a motorway or dual carriageway. It can feel like a snail’s pace when you reduce to 40mph or 30mph. In reality these are still substantial speeds and the only way to check you have reduced sufficiently is to check the speedometer regularly – never rely on ‘feeling’ your speed. You may be able to improve your judgement by regularly comparing how fast you think you are driving with what the speedometer says.