On Sun, 2012-11-18 at 21:26 +0100, Colin Smale wrote: > Phil, there's a difference between routing calculation (which neither > knows nor cares about road names, numbers, signposts etc) and how the > result of the calculation is presented to the user. Then you need to > relate the nodes/edges in the routing graph back to the real world. The > value in this tag (as well as name, destination etc) is that the > navigation software can give instructions based on recognisable > landmarks instead of referring to way IDs. This distinguishes between > pure "routing" and "useful navigation". > Thats the point I am making, the most useful instruction a satnav can give is "leave the motorway a junction 4", or words to that effect. There is nothing more recognisable than the junction number.
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