Abstract: An illuminative device (100) includes a control circuit (101), an acceleration detector (102) operable with the control circuit, and a plurality of light sources (103) operable with the control circuit. The control circuit is to receive an input (108) from the acceleration detector indicating deceleration (601) exceeds a predetermined threshold (662). Upon receipt of the input, the control circuit is to deliver a time-varying control signal to continuously illuminate the plurality of light sources with an illumination level varying between a first non-zero illumination level (664) and a second non-zero illumination level (665) in accordance with a frequency of the time-varying control signal.

Abstract: An illuminative device (100) includes a control circuit (101), an acceleration detector (102) operable with the control circuit, and a plurality of light sources (103) operable with the control circuit. The control circuit is to receive an input (108) from the acceleration detector indicating deceleration (601) exceeds a predetermined threshold (662). Upon receipt of the input, the control circuit is to deliver a time-varying control signal to continuously illuminate the plurality of light sources with an illumination level varying between a first non-zero illumination level (664) and a second non-zero illumination level (665) in accordance with a frequency of the time-varying control signal.

Abstract: The embodiments of the invention are directed to a method and apparatus to generate pulsing lights where parameters such as frequency, degree of brightness, and the number of pulses vary depending on the duration of the brake pedal application, the time interval between consecutive brake applications, and the deceleration rate of the vehicle, as well as optionally its distance from other vehicles. The brake light control system incorporates a microprocessor having multiple inputs, including a brake pedal sensor, and its output connected via an amplifying circuit to the lights. Other inputs of the microprocessor include a deceleration sensor, a distance sensor, and an optional manual pushbutton or switch located within the driver's reach. The lights controlled by the system may include brake lights, emergency lights, or additional lights shaped into a warning triangle.