The M42 is a major British motorway that has a reputation for being a testbed for new roadside technology, with a current traffic management scheme including sensors for tracking traffic built into the road and variable speed limit signs every 500 meters. The latest piece of kit to be tested out during roadworks is a radar-assisted speeding sign that not only flashes when it detects a speeding car
, but also displays the license plate number of said car. Yeah, scary. Apparently the public shame (or swift realization that it could also be an automated ticket-writer) that the sign dishes out to speeding motorists
is having some effect, with 50% of drivers slowing down once they see their number is up. Presumably the other half were concentrating too hard on getting out their digicams -- look ma! I'm on a roadsign!
-- to slow down.