Re: [Talk-transit] Mapping public transport network in Port au Prince

2011-09-01 Thread Peter Miller 
On 1 September 2011 06:03, Sébastien Pierrel sebastien.pier...@gmail.comwrote:

 Hello list,

 I'm getting the local mappers of Haiti to map the taptap routes in Port au
 Prince.
 Has anyone already mapped the transit network of a similar country?

 There's a brief mention of shared taxis in the 
 wikihttp://wiki.openstreetmap.org/wiki/Shared_transportbut not very helpful.

 We're considering to tag relations with the following tags:
 type=route
 route=bus
 bus=share_taxi
 name=*
 (example http://www.openstreetmap.org/browse/relation/1734930)

 I found 2000+ instances of the key shared_taxi and 250 for share_taxi but I
 couldn't locate them.
 What tools would you recommend to extract relations? Eventually, we want to
 work on this data with qgis/postgis.


I have done some work on the sharetaxi article in Wikipedia some time back,
but that got massively messed some time back (
http://en.wikipedia.org/wiki/Share_taxi).

My understanding is that these services vary from 'fixed route-variable
times' through to completely random routes. Another question is if the
services stop anywhere on the route or only at fixed points or possibly
there are some fixed points and then anywhere on the route in addition.

If there are fixed points then these can be added as stops. In the UK we
have 'hail-and-ride' which are linear sections of route where the vehicle
will stop which are treated like bus stops. We also have share taxi 'demand
responsive' services and can defined 'flexible zones' as polygons where the
service will pick people up from anywhere within the zone. These can then
all treated as being 'bus stops'.

It is still hard to describe the services themselves. Fixed routes can be
added a bus routes (as in your example).  If not then you may be more on
your own!

Here is a diagram and some modeling details from the UK schema if that
helps.
http://www.dft.gov.uk/transxchange/schema/2.0/examples/flexible/

I will be very interested to hear how you get on with this one.



Regards,


Peter Miller
ITO World Ltd





 Feedback of all sort is much appreciated.

 Cheers,
 /Seb.


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Re: [Talk-transit] Mapping public transport network in Port au Prince

2011-09-01 Thread Mike N 

On 9/1/2011 10:02 AM, Peter Miller wrote:

My understanding is that these services vary from 'fixed route-variable
times' through to completely random routes. Another question is if the
services stop anywhere on the route or only at fixed points or possibly
there are some fixed points and then anywhere on the route in addition.


  I have already run into a local fixed route, pick up at any 
intersection on the route bus, as well as a fixed route, variable 
time, pick up at stop points bus.


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Re: [Talk-transit] Mapping public transport network in Port au Prince

2011-09-01 Thread Michael von Glasow 

On 09/01/2011 07:03 AM, Sébastien Pierrel wrote:

Hello list,

I'm getting the local mappers of Haiti to map the taptap routes in 
Port au Prince.

Has anyone already mapped the transit network of a similar country?

There's a brief mention of shared taxis in the wiki 
http://wiki.openstreetmap.org/wiki/Shared_transport but not very 
helpful.


We're considering to tag relations with the following tags:
type=route
route=bus
bus=share_taxi
name=*
(example http://www.openstreetmap.org/browse/relation/1734930)


Hi Sébastien,

You might want to have a look at route=share_taxi [1]. I have seen this 
being used in Russia.


It's rendered on the latlon.org public transport layer; also openmap.lt 
used to have it (I'll ask the author what happened to it).


Michael

[1] http://wiki.openstreetmap.org/wiki/Tag:route%3Dshare_taxi



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