I absolutely agree that this has to be down to the users of the data to sort out. Here at traveline south east, we have just started using OSM for our GIS data and we map bus routes and route pedestrians on the GIS. We have had to take on board all sorts of "quirks" - three different ways (so far) of how bus lanes against the flow of a one way street are mapped, what to do with large pedestrian "areas" that you can walk across in any direction, footpaths that are actually on the street but which are shown separately in the data...
None of these, I argue, are incorrectly described in the data. But we, as users, need to identify the differences that lead to errors in our outputs, and then code our routing algorithms (or, more precisely in our case, import routines) to handle them. We get much of our feedback from users. In respect of the European routing system that you use, what did they say when you sent feedback to them? Regards, Stuart -----Original Message----- From: David Woolley [mailto:[email protected]] Sent: 28 July 2014 10:33 AM To: [email protected] Subject: Re: [Talk-GB] highway=trunk Roads and Cycle Navigation On 27/07/14 22:26, [email protected] wrote: > So there should be a clear tagging that is distinct for the meaning of > "trunk (UK sense)" vs "trunk (International sense) The logical conclusion of this would be that there would have to be a different tag for every jurisdiction. In this context a jurisdiction could be a city, not just a country, as they all have the potential to change the rules independently of each other, at any time. (Although I can't think of a good example for routing, at the moment, rules for highways differ from the rest of the county in London, e.g. there are more strict rules on pavement parking and blocking dropped kerbs.) That would actually make life more difficult for routing software developers, as they would need to have a table listing all of the variants, even if most where the the same. The current rules are set for the benefit of the many amateur mappers, not for the few professional software developers. Even in areas where the rules require the use of a single international standard, namely phone numbers, the British amateur mappers regularly break the rule by giving national format numbers or even +44(0) format numbers, because that is how they are used to representing them, and because it is more difficult for part time mappers to learn and remember the rules than it should be for a professional software developer. Of course commercial software development managers, when given something apparently free for cost, do tend not to budget for the cost of making it usable in their application. _______________________________________________ Talk-GB mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-gb _______________________________________________ Talk-GB mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-gb
