jomukuk wrote:
The "85th percentile" is used [basically] to justify higher speed limits [on here anyway]
Yes - it's the way they USED to set speed limits and I think most people on here wouldn't have aproblem with it. I certainly wouldn't!
jomukuk wrote:
I doubt that if the speed limit was 50, and drivers travelled at 40 habitually, the 85th percentile would be enacted and the limit reduced to 40.
I think that's pretty much exactly how it would work! Obviously, there would need to be some perceived requirement for a different limit to start with - say a petition by the villagers. Once that had happened, they would do a speed survey and if they found that 85% (or more) of the drivers were doing 40 or less, then it would be reduced to 40. Unfortunately, these days, they're increasingly using the 50%ile speed, so it would only have to be 50% or more drivers doing 40 or less. And even then, as the 85% isn't "law" - it was just one of the tools they used to assess it, they could impose a lower one again if they felt like it.
jomukuk wrote:
Personally, I long ago got fed-up with bunches of flowers marking the spot where another idiot thought that it was safe to take a corner at 60 because it was legal.
Now that's odd! I get to see lots of bunches of flowers but none of them ever seem to have the cause of death marked on them! The nearest ones to our house were because someone tried to overtake on the approach to a hidden dip (that had an oncoming car in it). Not sure how fast anyone was going at the time. If you saw the road (NSL rural, SC) I think you'd agree that it's pretty unlikely that the speed limit was being exceeded by either party.
There's another few bunches (and now, an unimaginable clutter of road furniture!) where someone doing about 80 tried to take a bend in a 60 limit that you can't really take at much more than about 40. However, I'm not completely convinced that (as he wasn't complying with the 60 limit), he'd have complied with a 50, 40, 30 or any other kind of lower limit, but you never know...

).
jomukuk wrote:
Now the village has a 30 limit...with a 40 limit leading into it....from a s/c nsl.
Oh, and I got overtaken this evening in the village....while sedately driving at the legal speed of 30....by a jaguar that was travelling so fast that it had to pass road-centre bollards on the wrong side because it did not have time to make it back to the nearside lane.....85th percentile....still, at least he was flashing his lights....
Maybe it was my fault for proceeding along at a slow [but legal] speed.
Unless 85% (or more) drivers are overtaking you when you're doing 30, I think your existing 30 limit is safe ! In fact, with the current anti-motorist climate, I dobut that if 100% of vehicles exceeded the limt AND all the villagers signed a petition to increase it, they'd raise it! (I expect they'd plant a camera there and make lots of lovely money instead!