a turn signal warning device that uses logic circuits to monitor power leads to lights on vehicle that are lit for turn signals , brakes , and emergency blinkers . this device functions on vehicles whereon the same set of lights are used for turn signals and for brakes ; and on vehicles on which separate sets of lights are used for turn signals and for brakes . the logic circuits function with a timing circuit and a piezoelectric alarm to provide an audible signal to an operator of the vehicle a predetermined length of time after the turn signals have been activated . the logic circuits sense when the brake pedal has been depressed and the emergency blinkers have been activated to prevent the audible signal from being generated .