Smart Headlights: Adaptive Driving Beams

Good sensor and adaptive example.    Made me think of the problem more abstractly.  Shining and focusing on data more precisely?

Smart Headlights Inch Closer to American Roads
The New York Times   By Eric A. Taub

Adaptive driving beam (A.D.B.) headlights use sensors and cameras to continuously shape a vehicle's high beams to illuminate only areas without oncoming traffic, while sending light elsewhere down the road. Car manufacturers such as Audi, BMW, Mercedes, and Toyota already offer this type of lighting, but ADB lamps currently are illegal in the U.S. The U.S. National Highway Traffic Safety Administration (NHTSA) currently requires vehicles to have distinct high and low beams, disallowing lights that can dynamically adjust. However, in October the NHTSA issued a notice of proposed rule-making that, if approved, would allow these headlamps in the U.S. In anticipation of this, Audi is already selling cars in the U.S. that feature “matrix-designed” LED headlamps, which need only a software upgrade to operate in an adaptive way.   ... "