Truckers can get a glimpse of the next wave in highway sign
technology on some highways in Maine.
The Portland Press reported
that the signs cannot only detect that a vehicle is approaching, but also how
fast it is traveling and other information, such as the vehicle’s height.
When the signs are triggered, they flash a warning, the
newspaper reported. Officials theorize that a sign that flashes only when a
vehicle is approaching a hazard is more effective than one that flashes all the
Some of the so-called “smart signs” warn vehicles of blind
intersections. Others alert drivers when an oversize load is about to move onto
In some cases, The
Press reported, use of the signs has helped local governments in the state
avoid expensive road and intersection restructuring projects on unsafe
intersections. Instead, those governments were able to spend a few thousand on
a sign to improve safety at the intersections.