The present invention relates to a traffic light, with a plurality of different colour signal lamps and with a device for presetting a respective activation cycle for the individual signal lamps, as well as with a device for the representation of a radical of the filament time at least one ...
worked out an automatically controlled traffic signal. Two years later, Lester Wire, a police officer, developed a different version powered by overhead trolley wires to light the signal. A 1917 patent by William Ghiglieri also had two lights — red and green. But where was the yellow light?
A few years later, Detroit police officer William Potts is credited with adding the yellow light, though as a city employee he couldn’t patent it. By 1930, Nelson wrote, all major American cities and many smaller ones had at least oneelectrical traffic signal. The advent of connected and ...
The present invention relates to a lighting means for illuminating a car, in particular a passenger compartment of a country - or aircraft, in which, in an... DIP Ralph,DIH Andreas,DIB Martin 被引量: 0发表: 2012年 LIGHT CONTROLLER FOR FLUORESCENT LAMP PURPOSE: To provide a light controller...
Illumination device with an envelope enclosing a light source In a first aspect, the invention provides an illumination device comprising an envelope enclosing a light source, preferably a light emitting diode (LED),... VSD Gielen,BJW Ter Weeme,JPM Ansems,... 被引量: 0发表: 2014年 LED road...
WIPO Patent Application WO/2010/097211 Kind Code: A1 Abstract: The invention relates to a method of monitoring the state of a signal, in particular a traffic light, comprising the steps of capturing an image of the signal, determining a color of the signal in the captured image, and ...
6 is a flow chart describing the traffic light control system according to the second embodiment of the present invention. The operation of the second embodiment will now be described with reference to FIG. 5 and the flow chart of FIG. 6. It is assumed that ERV 101 has been granted ...
Smarter vehicles could mean some of the most dramatic changes for the traditional traffic signal since the yellow light was added more than a century ago.
The patent for what was called a 'municipal traffic control system' was patented a hundred years ago, Oh, we don't call it that anymore. Nope, we just called it a traffic light. The good 'ol Red, Yellow, Green. In the beginning a police would sit in a booth on the sidewalk contro...
One traffic signal indicator makes a group traveling together distinguish that traffic signals pass through, including an auxiliary signal display unit. One auxiliary signal indicates the side that a corresponding traffic light is arranged in, and when red, one of the yellow light of green and a ...