Some of you may only have seen the above on various German autobahns although France have a limit of 81mph and in Ireland, Spain and Portugal it's 75pmh.
Back in the 70s and 80s in Germany you had - and still have - to watch your speed because limits vary on certain autobahns, yet that country insists their speed limits are relevant to the specific road environment. Some autobahns have no limits whatsoever.
Now it appears the UK may be introducing changes in motorway limits with ministers hoping to get the 80mph measure through Westminster before MPs break up for their holidays in July. They are still considering whether it should be 80mph on all motorways or just the 'quieter' ones. That would mean that the M25 and other motorways to northern cities such as Manchester and Liverpool would stay at 70.
MPs are also considering if the new limit would apply at night, when traffic is lighter, or in good weather.
How do we define 'night'. Would drivers be expected to take note of lighting-up times prior to a motorway journey?
Of course the greenies will be puce with anger because it seems driving at 80mph consumes 20% more fuel than a speed of 70mph. If they were paying for my diesel I may be courteous and listen, but they aren't, so I will drive as fast as the law allows if I so desire.
Another protest comes from the Parliamentary Advisory Council on Transport Safety who oppose the move claiming it would increase motorway casualties by between 5 and 10%. Their voices have been stilled by the official figures, which detail only 132 of the 2,200 road deaths were on motorways in 2009, making them the safest roads on which to drive.
It's about time a higher limit was introduced on motorways and I'm all for it. There's no mention of upping limits on other roads; they will remain unchanged and quite rightly.