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> the model seems to assume left turns are cheap

Happens to me all the time.

It also seems to assume crossing a bridge at rush hour is cheap. My only guess, and this truly is a guess, it is sees people in the bridge lane stopped and the thru lane moving and takes the average.




I have often wondered how the mapping programs handle multiple lanes moving at different speeds. Sometimes my highway exit backs up for a mile, while there are four lanes next to it moving full speed. All of the maps programs show this as blue (no traffic) even though I am moving at ten miles per hour. I’m guessing that they don’t have the ability to distinguish speed by lane.




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