By sensing tiny changes in shadows, a new system identifies approaching objects that may cause a collision.

Study finds that in some locations, lightweight gas-powered cars could have a bigger emissions-reducing impact than electric ones.

In “semiautonomous” cars, older drivers may need more time to take the wheel when responding to the unexpected.

Study quantifies how much of Manhattan 10 taxis cover in a day — to better measure air pollution, traffic, and more.

Autonomous control system “learns” to use simple maps and image data to navigate new, complex routes.

Long-haul trucks with electric motors combined with gas-alcohol engines could slash pollution levels and greenhouse gases.

On-chip system that detects signals at sub-terahertz wavelengths could help steer driverless cars through fog and dust.

Model identifies instances when autonomous systems have learned from examples that may cause dangerous errors in the real world.

Massive global survey reveals ethics preferences and regional differences.