Traffic control system

• US 5,134,393 A
• Filed: 04/02/1990
• Issued: 07/28/1992
• Est. Priority Date: 04/02/1990
• Status: Expired due to Fees

• Current Assignee: Henson H. Keith
• Original Assignee: Henson H. Keith
• Inventors: Henson, H. Keith
• Primary Examiner(s): Ng, Jin F.
• Assistant Examiner(s): SWARTHOUT, BRENT
• Application Number:
  US07/502,996
• Time in Patent Office: 848 Days
• Field of Search: 340/907, 340/917, 340/932, 340/933, 340/901, 340/903, 340/905, 180/167, 180/168, 180/169, 180/170, 364/436, 364/437, 364/438
• US Class Current: 340/933
• CPC Class Codes: G08G 1/02 using treadles built into the road pads or other sensitive devices responsive to passage of vehicles E01F11/00
• CPC Class Codes: G08G 1/096716 where the received information does not generate an automatic action on the vehicle control
• CPC Class Codes: G08G 1/096725 where the received information generates an automatic action on the vehicle control
• CPC Class Codes: G08G 1/096775 where the origin of the information is a central station

Abstract

A traffic control system comprising a traffic control strip extending along a traffic flow lane and having a plurality of luminants extending at spaced intervals in a linear fashion along the traffic control strip, a plurality of detectors positioned on the traffic control strip so as to detect vehicles passing in proximity thereto, a processor connected to the detectors and to the luminants in the traffic control strip. The traffic control strip is a clear strip of material rigidly affixed to the surface of the traffic lane. The traffic control strips include the electrical transmission lines extending from the detectors and the luminants to the processors. The luminants are a plurality of LEDs spaced in a linear array. The detector is an infrared transmitter/detector positioned at regular intervals along the traffic control strip. Vehicles passing along the traffic control strip may contain suitably positioned infrared transmitters and receivers for communication with the traffic control computers.

Claims

1. A traffic control system comprising:

a traffic control strip extending along a traffic lane, said traffic control strip having a plurality of luminants extending at spaced intervals along said traffic control strip;

detector means positioned on said traffic control strip so as to detect a vehicle in said traffic lane, said detector means comprising a plurality of infrared transmitter/detectors positioned at regular intervals along said traffic control strip, said infrared transmitter/detectors for detecting infrared reflections from a vehicle; and

processor means connected to said detector means and said plurality of luminants in said traffic control strip, said processor means for creating a signal pattern in said plurality of luminants relative to vehicles as detected by said detector means.

2. The system of claim 1, said traffic control strip extending along the center of said traffic lane.

3. The system of claim 1, said traffic control strip being a clear strip of solid material affixed to the surface of said traffic lane.

4. The system of claim 3, said clear strip being of a polycarbonate material having a thickness of less than one-half of an inch.

5. The system of claim 1, said traffic control strip being recessed into the surface of said traffic lane.

6. The system of claim 3, said traffic control strip having electrical transmission lines extending therewithin, said electrical transmission lines connected to said plurality of luminants, said detector means, and said processor means.

7. The system of claim 3, said traffic control strip having optical transmission lines contained therewithin, said optical transmission lines connected to said plurality of luminants, said detector means, and said processor means.

8. The system of claim 1, said plurality of luminants comprising light emitting diodes visibly positioned in a linear array in said traffic control strip.

9. A traffic control system comprising:

a traffic control strip extending along a traffic lane, said traffic control strip having a plurality of luminants extending at spaced intervals along said traffic control strip;

detector means positioned on said traffic control strip so as to detect a vehicle in said traffic lane;

transmitter means attached to said vehicle for transmitting a signal to said detector means, said detector means having a receiver suitable for receiving said signal as transmitted by said transmitter means; and

processor means connected to said detector means and to said plurality of luminants in said traffic control strip, said processor means for creating a signal pattern in said plurality of luminants relative to the vehicle as detected by said detector means.

10. The system of claim 9, said detector means positioned at regular intervals along said traffic control strip, said luminants aligned between said detector means in a linear array.

11. The system of claim 9, said detector means comprising a plurality of infrared transmitter/detectors, said transmitter/detectors for transmitting an infrared signal and detecting the reflectance of the transmitted infrared signal.

12. The system of claim 9, said transmitter means comprising:

a transmitter positioned on the underside of said vehicle so as to be in close proximity to said detector means.

13. The system of claim 12, said transmitter connected to the turn signal mechanism of said vehicle, said transmitter for delivering an infrared signal to said detector means relative to the direction of the turn signal of said vehicle.