Newsline
Jan 27, 2026

Motorist Convinced ‘99% Of Drivers’ Don’t Know What This Sign Means

motorist is convinced that ‘99% of drivers’ don’t know what this sign means.

Before taking your driving test in the UK, you must pass a theory test.

Motorists must learn about the laws of the road – including road signs – as well as take the hazard perception test.

Despite this being mandatory, it seems that most drivers have forgotten what one common sign means.

Found on roads all across the UK, this particular road sign is round and has a white backdrop with a thick black diagonal stripe through the middle.

It’s a road sign that every driver has to be aware of – yet it seems a lot of people do not have a clue what it means.

Posting on Reddit, one person says: “I’m convinced 99% of drivers don’t know what this sign means.”

People have taken to the comments to provide their own guesses, with one person joking: “National drifting zone.”

Someone else says: “National speed limit, but what that limit depends on what you’re driving. For example, if you’re driving a BMW it’s 100mph and excuses you from using indicators.”

Another person pens: “Oh that’s the ‘go as fast as you want and overtake on a bend if you feel like it’ sign!”

National speed limit sign.
This is the national speed limit sign. Credit: Alamy

One user comments: “It means “minimum speed – 80,” leading to someone responding: “In my experience it’s ‘max 40’.”

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