US Patent 10131365 Vehicle safety device using visible light communication

A vehicle safety device using visible light communication is disclosed. A vehicle safety apparatus using visible light communication includes a brake sensor on a main vehicle brake pedal for generating a deceleration signal by a degree of braking, an acceleration sensor on a main vehicle accelerator pedal for generating an acceleration signal by a degree of acceleration, a visible light receiver for receiving a preceding-vehicle signal from at least one preceding vehicle and a following-vehicle signal from at least one following vehicle, a visible light transmitter for transmitting a main vehicle signal to the preceding vehicle and vehicles, a collision risk determination unit for determining whether a danger of collision is present based on the preceding-vehicle signal, the following and main-vehicle signal, and an alarm unit for issuing an alarm to driver in response to the collision risk determination unit determining the presence of a danger of collision.