[OSM-talk] ferry route speed
p.weber at ucl.ac.uk
Thu Sep 4 11:23:25 BST 2008
Someone has been thinking about public transport routes, in the context
of bus routes, and put forward a quite detailed proposal. This can be
extended and generalised to include other forms of Public Transport.
Another interesting read is the http://www.transxchange.org.uk/
protocol for exchanging bus route information.
Peter Miller wrote:
> Traditionally the GIS part (Where are the Stops? / What is the route?) is
> managed separately from the schedules themselves. If we define the routes
> and the stops in OSM then we should probably leave it to other systems to
> handle the timetables (opentimetableservice?).
> One handover bit that is worth including is the transport operator's own ID
> for each Stop Point.
> Google have a simple timetable transfer protocol which might be worth a
> looking at.
> Mappers in San Francisco, Portland and a few other places might like to play
> with some available schedules in this format.
>> -----Original Message-----
>> From: talk-bounces at openstreetmap.org [mailto:talk-
>> bounces at openstreetmap.org] On Behalf Of Mark Williams
>> Sent: 04 September 2008 06:55
>> To: Kevin Ryan
>> Cc: talk at openstreetmap.org; Gervase Markham
>> Subject: [Spam] Re: [OSM-talk] ferry route speed
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>> Kevin Ryan wrote:
>>> Should probably give some indication of the max and min. Helsinki to
>>> Tallinn can be done in about 40-45 minutes during the summer in the fast
>>> ferries. Winter time the fastest is about 4 hours.
>>> 2008/9/2 Gervase Markham <gerv-gmane at gerv.net>
>>>> Shaun McDonald wrote:
>>>>> That low speed is far too low. When I was on the Holyhead to Dublin
>>>>> ferries recently, my GPS was giving 45mph for the return journey, and
>>>>> 25-30mph for the outward (different ferries, the return was the swift
>>>> Hmm. Perhaps we need maxcrossingtime and mincrossingtime.
>> Obviously, not all ferrries are the same. The low speed was indeed to
>> account for loading time.
>> max & min is fine, but doesn't account for time of day / no ferry for 5
>> Timetables can vary quite frequently.
>> I can't think of any way other than a link to the operator's URL that's
>> going to allow this to actually, really, work for timings, so some sort
>> of guide value is required - I do think this should be per route not
>> generic, the average I alluded to earlier is in the nature of a fix
>> because right now, I haven't seen an OSM-based router route on ferries
>> at all, so a silly time is better than avoiding it altogether.
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