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 Canada and the United States, most pedestrian signals now have countdown timers in the flashing hand symbol/Don't Walk phase. All new installations of pedestrian signals in the United States must include a countdown timer, unless the countdown timer is less than seven seconds long, per the 2009 MUTCD.