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From: mileburner on 28 Jul 2010 23:33 <boltar2003(a)boltar.world> wrote in message news:i2k3nr$5t4$1(a)speranza.aioe.org... > On Mon, 26 Jul 2010 14:42:04 +0100 > "mileburner" <mileburner(a)btinternet.com> wrote: >>> You're right, its not. Theres one for one direction and one for the >>> other. >>> Whether theres a bit of grass or 2 white lines down the middle makes not >>> a jot of difference. >> >>This might help: >>http://en.wikipedia.org/wiki/Dual_carriageway >> >>And this: >>http://en.wikipedia.org/wiki/Single_carriageway > > Well its wrong. No surprise given its wikipedia. A carraigeway is the part > of > the road in which all the vehicles are going in the same direction. It is > not > a particular piece of tarmac. This link provides supporting description. http://www.direct.gov.uk/en/TravelAndTransport/Highwaycode/DG_070308 So I guess the DSA *and* wikipedia have got it wrong. Keep digging :-)
From: mileburner on 28 Jul 2010 23:40 <boltar2003(a)boltar.world> wrote in message news:i2m9n0$5j0$1(a)speranza.aioe.org... > On Tue, 27 Jul 2010 10:34:57 +0100 > "GT" <a(a)b.c> wrote: >>Having said this, I'm not sure if the national 60 limit increases to 70 >>*automatically* as soon as the central reservation appears. I seem to >>remember that there has to be a 'dual carriageway' sign before the limit >>actually goes up to 70, despite the fact that the driver can clearly see >>that the carriageway has split in two. > > I wonder why they bother with the 60/70 difference. A head on with a > closing > speed of 120 isn't going to be any more survivable than one at 140. You seem to have overlooked the fact that at lower speeds, a head-on is less likely to occur. Speed limits are not based on the survivability of a collision. If they were, single carriageway roads would have a speed limit of about 20mph.
From: mileburner on 28 Jul 2010 23:46 "Brimstone" <brimstone(a)hotmail.com> wrote in message news:VK6dndNIEaTHMdPRnZ2dnUVZ7sadnZ2d(a)bt.com... > > <boltar2003(a)boltar.world> wrote in message > news:i2m9n0$5j0$1(a)speranza.aioe.org... >> On Tue, 27 Jul 2010 10:34:57 +0100 >> "GT" <a(a)b.c> wrote: >>>Having said this, I'm not sure if the national 60 limit increases to 70 >>>*automatically* as soon as the central reservation appears. I seem to >>>remember that there has to be a 'dual carriageway' sign before the limit >>>actually goes up to 70, despite the fact that the driver can clearly see >>>that the carriageway has split in two. >> >> I wonder why they bother with the 60/70 difference. A head on with a >> closing >> speed of 120 isn't going to be any more survivable than one at 140. >> > A good question, especially as we now have one sign with two meanings. > > For those who started driving more recently, the current NSL sign (white > disc with a black diagonal bar) original meant "No Speed Limit". Indeed, but it the world of boltar and GT that would mean that any road user would need to accelerate to infinity otherwise they would failing to make progress. It needed capping because many drivers saw No Speed Limit as an excuse to drive as fast as they liked with no regard for safety. And for those with knowledge as limited as GT and boltar, the NSL also varies depending on the type of vehicle you are driving.
From: mileburner on 29 Jul 2010 00:13 "GT" <a(a)b.c> wrote in message news:4c4ddee1$0$12277$c3e8da3(a)news.astraweb.com... > > Can you please explain for me, in simple terms - as I clearly don't > understand - how exactly is 20mph faster than 30mph? Err, that's because it is not. However, if the time of a journey is dictated largely by slow moving or stationary traffic queues, short bursts of 30mph between a stop-start crawl can make little or no difference to the overall journey time. HTH
From: mileburner on 29 Jul 2010 00:17
GT wrote: > "Brimstone" <brimstone(a)hotmail.com> wrote in message > news:beadnQD0fLE5BtPRnZ2dnUVZ8iidnZ2d(a)bt.com... >> >> "Derek C" <del.copeland(a)tiscali.co.uk> wrote in message >> news:e057a689-fb6a-4647-b423-0dd9d36d2400(a)q2g2000vbd.googlegroups.com... >> >>> If you go faster, you have a better chance of getting to the traffic >>> lights while they are still on green. >> >> How do you know they're on green at the moment? > > As posted already, in some cities, the lights are timed to increase > traffic flow - as one set of lights changes to green the traffic > accellerates up to the speed limit and the lights down the road are > timed so that as the traffic arrives at the speed limit, the lights > change to green. Of course, if there is a slow moving vehicle holding > everyone up and illegally refusing to yield, then this system falls > down around its feet! > I also read that lots of these timings were changed a few months > before London brought in congestion charging - this was to falsly > increase the congestion and then after the congestion charging was > introduced, they put the timings back and claimed that congestion > charging was a winner! So this congestion charge is all one big conspiricy huh? |