Alan Braggins said:In Cambridge there are a number of streets which aren't one way, but are
either "no entry to motor vehicles" at one end, or "no entry" with a
cycles only bypass around it. Not all of them have marked cycle lanes.
And one that, according to a local councillor, is actually one way except
to cycles although the signs don't show that. While it's unlikely that many
motorcyclists would want to do a U-turn there, apparently they are expected
to know the actual legal status of the road by telepathy or something.
I'm trying to implement some of these, so the thread is interesting
for me. You all seem to confirm that signing is critical. There are
essentially 3 options:
2-way street with a no entry plug with a cycle exemption at one end -
effectively one way for motor vehicles unless there are junctions.
This is cheapest and easiest to do, but engineers worry about drivers
flouting the no entry and having to be caught at that one point.
Operates similarly to option 3 but the occasional contraflow motor
vehicle makes contraflow cyclists less unexpected.
One way with contraflow cycle lane. Engineers and many cyclists prefer
this to the next option, but it's the most expensive (end-to-end
paint), and is problematic on narrow streets or ones with parking both
sides. The lane is too narrow, or too close to parked cars, or the
rest of the road is too narrow, or drivers may feel that if they can
stay out of the cycle lane they don't need to slow down when meeting a
cyclist.
One way with cycle exemption. Marked lanes and preferably splitter
islands only at the ends. Signing very important. These roads should
operate in the same way as similar two-way roads, except that in one
direction there will only be cyclists. DfT guidance says this is OK
below certain traffic volumes / speeds (see Traffic Advisory Leaflet
6/98). Engineers find it hard to envisage cyclists and motorists in
opposite directions negotiating their way past each other. With parked
cars both sides, the cyclist stays well out until the motorist slows
down, unless there's a convenient gap on the cyclist's side to let the
motorist past. Similarly the motorist should pull in if there's a gap
in the parked cars on his side. If there are no gaps in the parked
cars, both slow down and squeeze past each other. Usually this only
exposes the cyclist to the door danger from one parked car.
At present I'm being forced to do option 2, but I prefer both the others.
Colin McKenzie
--
The great advantage of not trusting statistics is that
it leaves you free to believe the damned lies instead!