US3818429A - Multi-intersection traffic control system - Google Patents
Multi-intersection traffic control system Download PDFInfo
- Publication number
- US3818429A US3818429A US00196312A US19631271A US3818429A US 3818429 A US3818429 A US 3818429A US 00196312 A US00196312 A US 00196312A US 19631271 A US19631271 A US 19631271A US 3818429 A US3818429 A US 3818429A
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- US
- United States
- Prior art keywords
- invention according
- signals
- traffic
- further including
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/081—Plural intersections under common control
- G08G1/082—Controlling the time between beginning of the same phase of a cycle at adjacent intersections
Definitions
- a master traffic control system including both methods of and apparatus for selecting, from a plurality of pre-recorded programs, a particular program to control the energization of traffic lights at a number of intersections.
- the program may be chosen in response to various traffic parameters computed from signals supplied by vehicle detectors, or by the time of day, as determined by selective programming of the master controller.
- the traffic parameters are represented as an analog voltage cumulatively variable with changes in traffic activity, and the traffic control program may be selected in accordance with various selected averages, ratios and ranges of the computed parameters.
- Novel circuitry is also provided for accomplishing various functions in the master controller, such as monitoring the detector inputs, providing the analog output voltage representing the traffic parameters, averaging the voltages, etc.
- Various indicating devices receive outputs from control system values and operations to provide visual displays and printed records of traffic parameter values, program identifications, etc.
- JUN I 8 [B74 sum as or s3 MASTER CLOCK HOUR I HNUT'ES ADVANCE MI UTES HOURS DAY DAY OF WEEK L22 mom. L 3 m5. L24- WED L25 THU. Lzs gg L27@ L2s SW SIO- @(Mmures) MONITOR DETEfiO'FY INPUT SELECT D4 a r FoR TEST 0:; U: Mar m um:
- PATENTEU 3 818 429 sum -11UF 53 PATENIEDJUNI 81w 3.818.429
- COMPARATOR NETWORK I [SI SPEED 6 I COMPUTER Q Q $142 KS2 SPEED I COMPUTER 7 I PATENTEDJUN I 81974 sum 17 0F 53 x mm? 6252 Ale 0 02.1856 [6N5 IO 0
Abstract
Description
Claims (35)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00196312A US3818429A (en) | 1971-07-28 | 1971-11-08 | Multi-intersection traffic control system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16691571A | 1971-07-28 | 1971-07-28 | |
US00196312A US3818429A (en) | 1971-07-28 | 1971-11-08 | Multi-intersection traffic control system |
Publications (1)
Publication Number | Publication Date |
---|---|
US3818429A true US3818429A (en) | 1974-06-18 |
Family
ID=26862676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00196312A Expired - Lifetime US3818429A (en) | 1971-07-28 | 1971-11-08 | Multi-intersection traffic control system |
Country Status (1)
Country | Link |
---|---|
US (1) | US3818429A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2379872A1 (en) * | 1977-02-03 | 1978-09-01 | Automatisme Cie Gle | Traffic light coordination control system - uses magnetic loop point referencing system to determine mode of light operation |
USRE31044E (en) * | 1977-10-19 | 1982-09-28 | TRAC, Inc. | Traffic coordinator for arterial traffic system |
FR2520908A1 (en) * | 1982-02-01 | 1983-08-05 | Garbarini Sa A | Remotely controlled traffic light system - includes central controller communicating via telephone lines with inductive loop local traffic detectors and light controllers |
US4463339A (en) * | 1979-01-02 | 1984-07-31 | Ralph E. Frick | State/interval redundant controller system for traffic signals |
US4472714A (en) * | 1983-01-21 | 1984-09-18 | Econolite Control Products, Inc. | Clock synchronization circuit for control of traffic signals |
US5606308A (en) * | 1995-08-07 | 1997-02-25 | Kelsey-Hayes Company | Method and system for controlling the illumination of a vehicular lamp and for monitoring the state of a switch connected thereto |
US20030063016A1 (en) * | 2001-09-20 | 2003-04-03 | Paul Mathias | Method, system and control device for controlling light signal transmitters at intersections |
US7997090B2 (en) * | 2008-01-30 | 2011-08-16 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Air conditioning system, method of operation thereof, and vehicle using the same |
US20120150421A1 (en) * | 2010-12-08 | 2012-06-14 | Mark Simpson | Dynamic Transitioning Between Intersection Controller Traffic Engines |
US20130013180A1 (en) * | 2011-07-07 | 2013-01-10 | International Business Machines Corporation | Context-based traffic flow control |
US9818297B2 (en) | 2011-12-16 | 2017-11-14 | Pragmatek Transport Innovations, Inc. | Multi-agent reinforcement learning for integrated and networked adaptive traffic signal control |
US10140859B1 (en) | 2017-08-17 | 2018-11-27 | International Business Machines Corporation | Amelioration of traffic gridlock conditions |
US20200043330A1 (en) * | 2017-04-07 | 2020-02-06 | Weiping Meng | Traffic Signal Pan-Greenwave Control Method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3239653A (en) * | 1960-09-08 | 1966-03-08 | Lab For Electronics Inc | Traffic density computer |
US3254324A (en) * | 1961-01-13 | 1966-05-31 | Casciato Leonard | Traffic signal systems |
US3397306A (en) * | 1964-12-01 | 1968-08-13 | Gen Signal Corp | Apparatus for updating running average of measured traffic parameter |
US3482208A (en) * | 1966-02-21 | 1969-12-02 | Gen Signal Corp | Traffic signal control system |
US3675196A (en) * | 1971-01-25 | 1972-07-04 | Computer Systems Eng Inc | Traffic signal control system |
-
1971
- 1971-11-08 US US00196312A patent/US3818429A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3239653A (en) * | 1960-09-08 | 1966-03-08 | Lab For Electronics Inc | Traffic density computer |
US3254324A (en) * | 1961-01-13 | 1966-05-31 | Casciato Leonard | Traffic signal systems |
US3397306A (en) * | 1964-12-01 | 1968-08-13 | Gen Signal Corp | Apparatus for updating running average of measured traffic parameter |
US3482208A (en) * | 1966-02-21 | 1969-12-02 | Gen Signal Corp | Traffic signal control system |
US3675196A (en) * | 1971-01-25 | 1972-07-04 | Computer Systems Eng Inc | Traffic signal control system |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2379872A1 (en) * | 1977-02-03 | 1978-09-01 | Automatisme Cie Gle | Traffic light coordination control system - uses magnetic loop point referencing system to determine mode of light operation |
USRE31044E (en) * | 1977-10-19 | 1982-09-28 | TRAC, Inc. | Traffic coordinator for arterial traffic system |
US4463339A (en) * | 1979-01-02 | 1984-07-31 | Ralph E. Frick | State/interval redundant controller system for traffic signals |
FR2520908A1 (en) * | 1982-02-01 | 1983-08-05 | Garbarini Sa A | Remotely controlled traffic light system - includes central controller communicating via telephone lines with inductive loop local traffic detectors and light controllers |
US4472714A (en) * | 1983-01-21 | 1984-09-18 | Econolite Control Products, Inc. | Clock synchronization circuit for control of traffic signals |
US5606308A (en) * | 1995-08-07 | 1997-02-25 | Kelsey-Hayes Company | Method and system for controlling the illumination of a vehicular lamp and for monitoring the state of a switch connected thereto |
US20030063016A1 (en) * | 2001-09-20 | 2003-04-03 | Paul Mathias | Method, system and control device for controlling light signal transmitters at intersections |
US6850171B2 (en) * | 2001-09-20 | 2005-02-01 | Siemens Aktiengesellschaft | Method, system and control device for controlling light signal transmitters at intersections |
US7997090B2 (en) * | 2008-01-30 | 2011-08-16 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Air conditioning system, method of operation thereof, and vehicle using the same |
US20120150421A1 (en) * | 2010-12-08 | 2012-06-14 | Mark Simpson | Dynamic Transitioning Between Intersection Controller Traffic Engines |
US20130013180A1 (en) * | 2011-07-07 | 2013-01-10 | International Business Machines Corporation | Context-based traffic flow control |
US8909462B2 (en) * | 2011-07-07 | 2014-12-09 | International Business Machines Corporation | Context-based traffic flow control |
US9818297B2 (en) | 2011-12-16 | 2017-11-14 | Pragmatek Transport Innovations, Inc. | Multi-agent reinforcement learning for integrated and networked adaptive traffic signal control |
US20200043330A1 (en) * | 2017-04-07 | 2020-02-06 | Weiping Meng | Traffic Signal Pan-Greenwave Control Method |
US10140859B1 (en) | 2017-08-17 | 2018-11-27 | International Business Machines Corporation | Amelioration of traffic gridlock conditions |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: LINK FLIGHT SIMULATION CORPORATION, KIRKWOOD INDUS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SINGER COMPANY, THE, A NJ CORP.;REEL/FRAME:004998/0190 Effective date: 19880425 |
|
AS | Assignment |
Owner name: CAE-LINK CORPORATION, A CORP. OF DE. Free format text: MERGER;ASSIGNORS:LINK FLIGHT SIMULATION CORPORATION, A DE CORP.;LINK FACTICAL MILITARY SIMULATION CORPORATION, A CORP. OF DE;LINK TRAINING SERVICES CORPORATION, A CORP. OF DE (MERGED INTO);AND OTHERS;REEL/FRAME:005252/0187 Effective date: 19881130 |