[OSM-talk] Bus routes
Tom Chance
tom at acrewoods.net
Tue Oct 3 14:45:39 BST 2006
Ahoy,
This looks really useful: http://oxbus.sparemint.com/
But I've been pondering how to collect bus route data where I live and I can
foresee a few problems.
The most obvious way to collect the data would be to note down the bus route
numbers at every bus stop.
But this doesn't give any indication as to the actual route, i.e. the sequence
in which they are visited by each bus number and the route the buses take in
between stops. We'd have to travel down each bus route to get this (an
expensive and extensive task), or take the data from bus route maps provided
by the bus companies (a copyright violation?)
Second, a typical bus stop may serve a bus that doddles around in a town such
as Bedford (e.g. the number 120 bus', as well as a bus that goes as far
afield as Hitchin (e.g. 'the number X1 bus'). But then in Hitchin the X1 may
stop at a bus stop that serves another "doddle around town" bus that is also
called the number 120, and that is clearly not the same one that doddles
around in Bedford. Charting the full bus routes would solve this, but I can't
think of any simple way to put this data onto nodes for bus stops. Neither
the bus company nor the localities served provide a foolproof guide, so far
as I can tell.
So what data should I collect, and how should I enter it into the database,
whilst I map St Albans? I want to get every bus stop as I go, rather than
requiring another round of trips once I've done the basic street data.
Regards,
Tom
--
The struggle against power is the struggle of memory against forgetting
- Kundera
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