A subset of crash avoidance is driver assistance systems, which help the driver to detect obstacles and to control the vehicle.

They invented a motorized wheelchair equipped with radar or sonar sensors used to detect obstacles.

It was his job to detect obstacles to the Allied war effort, and remove them - permanently.

It is sometimes used in mobile robotics to detect obstacles.

With hands outstretched to detect obstacles he walked quickly to her and sat; a moment's listening spotted his target for a good-morning kiss.

These update information include information on what area is currently under observation by the sensors, where detected obstacles exist, and vehicle status".

It also uses the laser range finder for detecting obstacles and avoiding them.

It is usually swung in a low sweeping motion, across the intended path of travel, to detect obstacles.

The Commission must therefore continue to detect obstacles of all kinds which prevent European companies adopting such a policy.

He didn't rely, either, on a sixth sense to detect obstacles or open spaces, which some blind people claimed to have.