The cobia (Rachycentron canadum) is a species of perciform marine fish, the only representative of the genus Rachycentron and the family Rachycentridae. Other common names include black kingfish, black salmon, ling, lemonfish, crabeater, prodigal son and black bonito.
Volvo's pedestrian and cyclist detection system, which debuted in 2013, uses a radar unit integrated into the car's grille, as well as a digital camera embedded in the interior rear-view mirror, to monitor a field of view several yards in front of the car.
In-roadway flashing lights are intended to call extra attention to pedestrians in crosswalks where signage or other design treatments are deemed insufficient. The flashers can be activated passively with infra-red or microwave detectors, or actively by pedestrian push-buttons.