What Rally is saying is more than correct for the current level of navigators. But thinking to an innovative navigator, the John's information looks very interesting. Exact time travel could be estimated using the correct speed limit available at the road's usage time. But we could also think to something for evoluted: the variation of the speed could be not only function of the time, but also of the assesed traffic ondition (statistically or real time assessed).
I think that having tags supporting the John's data, could add an interesting support to very advanced applications. I'm a recent contibutor to the OSM project, and I would like to use this thread to learn a bit more on the common idea to be used to add tags (and to propose new ones..) to the ways. >From other threads I understood (please, correct me), that we do not map for the application and its capabilities (render, navigator, etc..) but more for the completeness of the informations that, indeed, coudl drive any kind of application. Looking from a more high point of view is a kind of life-loop: data exists because there are applications that use them, and applications could exploit new features only if the map data are adequately detailed. Fabrizio -----Messaggio originale----- Da: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] conto di Rally de Leon Inviato: venerdì 5 dicembre 2008 20.10 A: [EMAIL PROTECTED]; [email protected] Oggetto: Re: [OSM-newbies] Speed Limits The most practical use of maxspeed on maps is to estimate the "travel time" of a particular route in a gps map of a navigational device, rather than just warn you if you are above the speed limit. It's always better to use the conservative value (lower speed limit) to estimate your travel time (so that the gps device can calculate and show you that fastest route without breaking the max speed) On Fri, Dec 5, 2008 at 10:09 PM, John Wesley Simpson <[EMAIL PROTECTED]> wrote: Howdy, I'm trying to use maxspeed to put in speed limits for roads in my local area. One of the roads has a speed limit of 55mph if you are northbound, but 50mph if you are southbound. Another road has a speed limit of 70mph in the daytime, but 65mph at nighttime. How should these be entered? Is there a web-page that specifically explains how to enter these situations into the editor? -- John Wesley Simpson <[EMAIL PROTECTED]> SwaJime's Cove _______________________________________________ newbies mailing list [email protected] http://lists.openstreetmap.org/listinfo/newbies
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