On 9/18/2011 1:18 PM, Anthony wrote:
On Sun, Sep 18, 2011 at 1:12 PM, Anthony<o...@inbox.org> wrote:
Yes, mapping every lane as a separate way would be even better, but
let's go one step at a time.
Actually, I take back that last sentence:
http://www.pocketgpsworld.com/reviews/tomtom-v8/v8_lane_assist_northwest2_speed_alert.jpg
Do you think Garmin is mapping every lane as a separate way here? I
don't think they are, or that they should. I think if I were going to
do it, I'd map this as one way up to the theoretical gore point, and
then as two ways after the theoretical gore point. I wouldn't use
five ways.
It's simple on a motorway. But, for a simple example on a surface road,
how do you know where the straight lanes go if there are 3 lanes after
an intersection but 2 before?
And actually, even on a motorway, what if it's 4 lanes to a split of 2
and 3? The assumption is that the second lane from the left can be used
to exit, but it's possible that only the leftmost lane is available, and
a second lane begins on the ramp right at the gore. Or perhaps there's a
short segment of 5 lanes before the split - how do you know which side
the new lane forms on?
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