"Nick Finnigan" wrote in message
...
"iantheengineer" wrote in message
...

"Nick Finnigan" wrote in message
...

Under the assumption that there are no cars, vans, bikes
would there still be congestion? Assume the usage is the
same as the total passenger km as on an urban bus route
at the moment, and whatever bus frequency is optimal
(which I expect to be at least 30 buses in the peak hour).

Its an unanswerable question as it depends upon link and junction
capacities
so each location is different.,

You can not say whether there would be congestion
when the only traffic on the road is buses?
Or you can not say whether the PT travel speed in
ideal conditions is any better than it is at the moment?

but it is fair to say that the throughput of
people would be greater so congestion would a lot less than it is at
present

Well, I hadn't mentioned throughput, but what would
you expect the maximum PT throughput per lane to be?



Per lane the maximum throughput of a lane for buses is 900 vehicles per
hour. This is purely a lane capacity in pcu (passenger car units) that
relates a bus to equal 2 passnger car units. An average lane has a capacity
of 1800 pcu, although this depends upon width gradient and alignment.