States Wire Up Roads as Cars Get Smarter
Some states are setting up “smart roads” lined with fiber optics, cameras and connected signaling devices in an effort to unlock benefits from self-driving cars, curb accidents and save fuel.
@evankirstel: States Wire Up Roads as Cars Get Smarter by @PaulPage on @WSJ #IoT #connectedcars
FAIRFAX, Va.—On a crowded interstate outside Washington, D.C., large digital signs over four westbound lanes flashed messages lowering the speed limit by 10, then 20 miles an hour.
Drivers slowed just as a fast-moving thunderstorm unleashed sheets of rain that drenched the road and reduced visibility to a few dozen yards. There was no abrupt braking, no swerving and none of the fender-benders that can tie up traffic for miles.