Quote:
Originally Posted by Mrjaydeeone
my company has something like that set up in parts of NJ and NYC. Maybe someone is doing the same thing for PA too. The ones that we have up basically show speeds of the traffic on that roadway. (Not for ticket purpases, but for roadway speeds).
You can look on the map on this site and see what I mean. The different colors show the speeds the roadway is moving at.
http://www.511nj.org/trafficmap.aspx
if you look on the left there is a key for the colors on the map.
Unfortunately I don't have any pictures of the sensors (antennas as we call them) but they are usually located above the roadway on existing sign structures and there is above each lane. |
This.
Navteq (and previously traffic.com in the Philadelphia region) sets up sensors along the highways to monitor traffic and congestion. They then sell that and other mapping information to other companies, you can see on mostly any map service online "Powered by Navteq" or something like that. Even the one that this guy link has some kind of Navteq data (probably just the map). I think the only online maps that don't use Navteq is google (they used to be are now doing it internally).
I'm not sure if this will work, but here is an example:
http://maps.google.com/maps?f=q&sour...08.65,,0,-8.26
That sensor measures congestion and is then sent to Navteq.