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In uk.local.east-anglia Robin May wrote:
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The route 66 bus from Ipswich station to Martlesham has a short
section in one of the Ipswich suburbs where it runs between guides
and thus the driver doesn't have to steer. Is this what the
question was about?

How do these guides work?

There are a couple of little wheels either side at the front of the
bus, these wheels are horizontal with the spindles vertical. I guess
they're around 9" diameter and a foot or so from the ground. These run
against a raised guide either side of the track the bus runs along.
Presumably there's a servo system that detects pressure on the wheels
and thus steers the bus.


Do they look anything like those in like the guidewheel shown in the second
photo at http://www.camcycle.org.uk/newsletters/49/article1.html (you'll
need to scroll down a bit) ? That photo is taken from Cambridgeshire County
Council's own publicity. It would be useful to know whether the Ipswich
scheme is similar to the one proposed for Cambridgeshire

PaulO