On 9/30/10 7:38 AM, Colin Smale wrote:
we as mappers have no control over how the different routing systems
select default speeds. we should not be making assumptions about that.
Also important for routing systems is the "practical speed" for a road.
Many country roads may have a high legal limit, but for reasons including
width and curviness you may never achieve anywhere near that in practice.
i have at times wanted this, when i've seen a road that was defaulted to
55mph
but wasn't practical to travel at more than 40 due to broken pavement, for
example.
richard
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