If you've been driving for years, it's likely there are a few little things you've forgotten - from what the different coloured cat's eyes on the road mean, to the significance of certain road markings.
But there are a few things that it's imperative you remember when driving so as to be as safe as possible while on the road - such as speed limit signs. But it seems there's one very common road sign that many people don't understand and it could cause problems if you don't know what it means.
We're talking of course, about this sign you'll see on the side of many roads, from country roads to dual carriageways which features a white circle with a diagonal black line through it - do you know what this represents?
The sign is for the national speed limit, which varies a little depending on where you are driving. And it's thought that a number of Brits don't know what the national speed limit is. Sharing a picture of the common road sign to Reddit, an unnamed driver recently wrote: "I'm convinced 99 percent of drivers don't know what this sign means."
And while there were many jokey responses to the post, some genuinely appeared not to know the answer, with one person commenting: "It means 'minimum speed - 80'", to which the original poster drily responded, "In my experience, it's 'max 40'." Somewhat worryingly, a third person recalled: "One of the girls at my old hairdressers genuinely thought it meant 'go whatever speed you want'."
For those who are a bit unsure about this one, the RAC website gives the following explanation: "A white circular sign with a single black diagonal stripe through it tells you that the national speed limit applies on the upcoming stretch of road. It supersedes any previous speed limit signs you may have had to adhere to, such as passing through temporary roadworks."
For cars, motorcycles, car-derived vans, and dual-purpose vehicles, the national speed limit in the UK is 30 mph in a built-up area, 60 mph on a single carriageway, and 70 mph on a dual carriageway or motorway. More information on the national speed limit and how it varies depending on road type and vehicle type can be found at www.gov.uk/speed-limits.
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