It's possible to do this, but most traffic data sources are incomplete. We
don't make this available via a public api (or via our regular maps).
The problem is that most traffic data sources are based on sensor placed on
highways by the DOTs. These can accurately measure the traffic speeds on
the highways - but not on adjacent roads which have no sensors. You know
speed at the sensor points - but you know nothing of traffic jams elsewhere.
This is more problematic if you try to re-route based on this data, because
you don't know if the side roads offer a free passage, or if they are just
as jammed as the main road.
Some very serious attempts have been made by gathering data from vehicles.
The best know effort is DASH Navigation (http://www.dash.net/)
marketed a personal navigation device for a short period that was not,
unfortunately, commercially successful. They are reinventing themselves to
license their technology.
There's also the mobile millennium project:
This uses cell phones to determine traffic speeds. The wide availability of
cell phones means they may be able to collect an awful lot of data points -
so long as people download the free software and let themselves be
anonymously tracked for traffic purposes. I don't know how successful they
have been distinguishing between people driving with their cell phone
sitting in the car, and those walking along a sidewalk. Solve that problem,
and they would have an excellent source of traffic data.
] On Behalf
Sent: Thursday, February 12, 2009 12:20 AM
Subject: [yws-maps] How can i determine driving times based on traffic? Is
there a way???
From my searching, I think I have determined that actual driving times
based on traffic from two points connot be determined? Is that so?
What I am trying to do, is write an application that can grab an
estimated time WITH traffic but I am coming up short on how to get it?
Has anyone solved this problem? Is it even solvable?
I can't imagine there is no way to get a modified drive time based on
traffic congestion? Perhaps a formula that can take the color coded
routes and apply some sort of logic based on distance of the color
route and the percentage of the slow down?
Can I please get some advice from anyone with some experience on this
topic or anyone with some alternative thinking on how to solve it?
Thank you so much for your time!
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