Abstract: A motion activated and light sensitive multi-purpose safety light, having a housing for supporting: a motion sensor; a light emitting diode which serves as both a light source and a light detector; an electronic circuit which further comprises; a motion sensor amplifier to condition the motion signal received from the motion sensor, a driver for illuminating the light emitting diode in a flashing manner, a timer enabling the operation of the driver and a photo-amplifier providing amplification of the input signal received from the light emitting diode. A user-selected control components for providing parameters relating to the conditioning and the flash rate. A printed circuit board providing an area to mount the electrical components and electric circuit and a system power source.

Abstract: A safety light for a bicycle. A housing member supports a power source and at least one light source. The light source is electrically connectable to the power source. A motion sensitive switch switches between an open condition and a closed condition in response to motion of the housing member. A control circuit is activated dependent on the open and the closed condition of the motion switching means. The control circuit produces a flashing voltage pulse effective to cause the at least one light source to flash on and off. The control circuit also detects an on-off cycle each time the switching means switches between the open condition and the closed condition in response to motion of the housing member and produces a flashing voltage pulse for a predetermined length of time after detecting a last on-off cycle.