Split-phase PED head signal

摘要

A split-phase pedestrian head traffic signal having directional light beams and a variable beamwidth. The pedestrian heads are selectively controlled such that half-way through a control cycle, a pedestrian half-way across the street may see a "walk" signal, while a pedestrian still at the far side of the street will actually see a "stop hand" signal. A pair of pedestrian heads each having a split-phase facilitate the beam steering such that the appropriate walk or stop hand signal are viewed by the pedestrian at the appropriate location. An area array of LEDs in combination with a Fresnel lens is selectively controlled such that light generated from the respective head can be directed toward different positions of the street for informing pedestrians at different locations attempting to cross the street.