Abstract: A lighting peg having a solar cell and a battery installed in a casing including a number of sensors each including a photoelectric conversion element mounted on a side surface of the casing, a differential circuit provided on the subsequent stage of the conversion element, and a comparator which delivers a high level output when the output of the differential circuit exceeds a predetermined value.

Abstract: In a lighting peg with a variable pulsation rate including a square outer casing provided with a solar cell and a battery and adapted to be installed at an intersection of two roads, light emitting diodes and a photoelectric conversion element are provided on each side surface of the square outer casing. An ambient light sensor for detecting ambient light and a pulse signal generating circuit for generating pulse signals are further provided together with vehicle sensors, each including the photoelectric conversion element, a differential circuit and a comparator.