Experts have warned that this manoeuvre "doesn’t just frustrate other drivers" but "actively undermines everyone’s safety".

Corroborating this view, PassMeFast also remarked: "Sometimes advisory speed limit signs are used on motorways. These display a number, with amber lights flashing in the corners of the sign.

Supporting this view, PassMeFast also noted: "Sometimes advisory speed limit signs are used on motorways. These display a number, with amber lights flashing in the corners of the sign.

Amber speed limit signs on motorways are actually advisory (stock image) Backlash sees 20mph speed limit dropped on some roads in Wales Motorists aged 50 and over issued warning over Highway Code ...

Even though the motorway speed limit stands at 70mph, it drops to 60mph for cars, motorcycles, car-derived vans and dual-purpose vehicles when they are towing caravans or trailers. ‌ ...

A speed limit displayed inside a red circle is mandatory, not advisory - so you should always stick to the speed limit displayed on smart motorway gantry signs.

In the majority of built-up areas across Wales, the standard speed limit is set at 20 miles per hour (32km/h). For our free daily briefing on the biggest issues facing the nation, sign up to the ...

The motorway speed limit will increase from 70mph to 80mph in 2013, under Government plans - a move aimed at boosting the economy, the Transport Secretary has said. Speaking to Sky News, Philip ...

But what many don't realise is that not every speed limit sign on the motorway has the force of law behind it; some are simply advisory. One enlightened Reddit user, BevvyTime, shared their ...