Patents by Inventor Carey Plazak

Carey Plazak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Traffic control system using multiple yellow lights to divide a cautionary signal into equal parts
    Publication number: 20110133955
    Abstract: A traffic control system for controlling vehicular traffic flow at intersections in which the conventional red/yellow/green three-light traffic signal that informs a motorist to stop, prepare to stop, and go is supplemented with multiple yellow light signals which are integrated as part of the traffic light. The additional yellow light signals inform a motorist that they will have sufficient time to make a gradual normal stop at the intersection before the red stop light is switched on by dividing the duration of the yellow cautionary signal into multiple yellow light signals.
    Type: Application
    Filed: December 4, 2009
    Publication date: June 9, 2011
    Inventors: Carey Plazak, Joseph Plazak