I’ve seen 10 mph signs, and I think 5 mph ones on rare occasion, so I was surprised to see an 8mph at road works the other day for the workers
It doesn’t equate to a round figure in the metric system, my first thought, so I’m baffled as to why this strange number and how they came to legitimise it?
It comes across to me like someone is pretending to have done extensive research, as though it’s an exact science, when in fact most likely it’s just another figure someone’s plucked out of thin air. (The origin of every limit?). It’s also made me think about
all limits and how by some strange phenomena the safety aspect, as dictated to us all, coincides with increments or multiples of 10 everywhere? How and why is this?
I’ve heard in the past that these limits are meant as a ceiling; the science, research or theory they purport to have done means ‘up to but no faster’. But true safety can’t possibly work that way; that it just so happens to be 30 in one place and then leap to 40. Or the 60 limit has now dropped like a stone to 40 even though nothing in the area has changed since the road was built and no accidents have ever occurred. It’s whimsical, plain and simple.
To put it another way, if proper research is done and they find that a better or more suitable limit for a given area would be 35mph it’s strange that it’s either raised above that to 40 or, more likely, dumbed down to 30. And of course if that same area, which is deemed safe to do 35 but it’s dumbed down, (because we simply can’t produce 35mph signs), then you can be prosecuted for doing 35mph on the basis that it’s dangerous. They tell you this so they must be right - right?
Of course this is all a nonsense anyway in reality because the ideal speed for any given stretch depends, or should depend, on the prevailing circumstances which can be all manner of numerical figures. But try telling that to some people...
For anyone old enough to remember old money and how things were rounded up, I wonder what would happen to our limits if they had to be changed to metric.
Would the ‘safe’
become a sign of 48.28 Kmh
become a sign of 64.37 Kmh
become a sign of 80.46 Kmh
No, of course not! Safety is about nice round figures and always going slower. So, unless you’re the man who thought of the 8 mph sign, I suspect they would dumb it down as follows. The new ‘safe’ limit signs become: -
40 Kmh = 24.85 mph
60 Kmh = 37.28 mph
80 Kmh = 49.71 mph (Quite close to the old one at least unless, on a whim, they dumb it down to 70 Kmh = 43.49 mph
Of course they may choose to
increase some limits if they want to follow Europe’s example. Perhaps I shouldn’t be so cynical...