She then naps at 4:30 she shows signs of drowsiness at this time but has a difficult time going down for this nap. (babywisemom.com)
It monitors your driving behaviors for signs of drowsiness, and if they're detected, it recommends that you take a break. (mercedeshoffman.com)
The GLA also has the «ATTENTION ASSIST» as standard, detecting signs of drowsiness via the steering behaviour and warning the driver about an impending microsleep. (mercedesblog.com)