Why not link a radar gun to one of those lighted traffic signs to let one know how fast triffic is moving ahead. Would work great for forcasting ruch hour traffic and contruction zone speeds.
-- mika_ranta, Jun 27 2000

Speed maps http://www.halfbake...m/idea/speed_20maps
Already halfbaked [hippo, Jun 27 2000, last modified Oct 04 2004]

Traffic Master, as mentioned by [rjswanson]. http://www.trafficm...ge.cfm?key=products
GPS + mobile + central database = timely traffic updates in the UK. [jutta, Jun 27 2000]

Baked. Traffic Master, a small light-box on your dashboard, tells you of roadworks and delays ahead.
-- rjswanson, Apr 07 2001


Of course, if you do this with a radar gun, the radar gun detectors in the cars in front of you will pick up on _that_, causing the drivers to slow down to the speed limit. Mumble ... stupid quantum effects ...
-- jutta, Apr 07 2001


I've seen signs on the side of the road reading 'You are traveling at <foo> MPH'. Even reasonably accurate, if there's only one car going by...It gets all kinds of confused if there's a bunch of cars, though...
-- StarChaser, Apr 08 2001



random, halfbakery