STOP SIGN WITH TRAFFIC CONTROL FEATURES

Abstract

Systems and methods related to stop signs with traffic control features are provided. A traffic signaling device signals a vehicle to proceed or wait. A controller receives data from a vehicle detection device indicating arrival of the vehicle within signaling range of the vehicle detection device. The controller receives an arrival time for the vehicle from a time keeping device and transmits the arrival time to a command center. A signal indicating permission to proceed is received at the controller from the command center and the controller instructs the traffic signaling device to signal the vehicle to proceed.

Description

TECHNICAL FIELD

Exemplary embodiments of the present invention relate generally to a system and method for controlling traffic using a stop sign with traffic control features.

BACKGROUND AND SUMMARY OF THE INVENTION

Traffic congestion is frequently caused by roadway intersections. Traffic often becomes backed up at intersections where conventional stop signs are used to control traffic because drivers are unsure of which driver has the right of way to cross the intersection first. Furthermore, traffic collisions often occur when one driver proceeds despite not having the right of way. While traffic lights can provide for improved traffic flow and reduced accidents, they are too expensive to install at every intersection. Furthermore, stop signs are not adaptable to changing traffic conditions.

Therefore, what is needed is stop sign with traffic control features. The present invention is a stop sign with traffic control features.

An assembly may comprise a conventional stop sign, which may be mounted to a post, pole, or the like. A traffic control unit may comprise one or more signaling devices which direct the driver of a nearby vehicle to proceed or wait. A vehicle detection device may detect vehicles located at or near the assembly. A controller may receive information from the vehicle detection device and direct the traffic control unit. The controller may receive instructions from a central command unit. The central command unit may be in communication with several or all assemblies for a given intersection. A power supply, such as a solar panel, may be electrically connected with various components of the assembly to provide power to the same.

The assembly may continuously scan for the arrival of a vehicle. Once a vehicle is detected, the assembly may note the arrival time and transmit the arrival time to the command center. The command center may determine if an earlier arrival time within a predetermined amount of time has been logged by the same or a different assembly for an intersection. If not, the command center may direct the respective assembly to set its traffic signaling device to proceed. If not, the system may wait until the predetermined time is reached and then direct the respective assembly to set its traffic signaling device to proceed.

Further features and advantages of the devices and systems disclosed herein, as well as the structure and operation of various aspects of the present disclosure, are described in detail below with reference to the accompanying figures.

BRIEF DESCRIPTION OF THE DRAWINGS

In addition to the features mentioned above, other aspects of the present invention will be readily apparent from the following descriptions of the drawings and exemplary embodiments, wherein like reference numerals across the several views refer to identical or equivalent features, and wherein:

FIG. 1 is front view of an exemplary assembly in accordance with the present invention;

FIG. 2 is a simplified illustration of a controller;

FIG. 3 is a top plan view of an exemplary intersection with multiple assemblies installed;

FIG. 4 is a simplified illustration of a command center; and

FIG. 5 is a flow chart with exemplary logic for operating the system of FIG. 3 in accordance with the present invention.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENT(S)

Various embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, specific details such as detailed configuration and components are merely provided to assist the overall understanding of these embodiments of the present invention. Therefore, it should be apparent to those skilled in the art that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

Embodiments of the invention are described herein with reference to illustrations of idealized embodiments (and intermediate structures) of the invention. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments of the invention should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing.

FIG. 1 is a front view of an exemplary assembly 10 in accordance with the present invention. The assembly 10 may comprise a conventional stop sign 12. The stop sign 12 may be a static sign, a digital sign, some combination thereof, or the like. The stop sign 12 may be mounted to a mounting device 14. The mounting device 14 may comprise a post, pole, some combination thereof, or the like. The stop sign 12 may be mounted in any fashion, such as but not limited to, an overhead member, a wall, a stand, or the like.

The assembly 10 may comprise a traffic signaling device 16. The traffic signaling device 16 may comprise one or more signaling devices 18A and 18B configured to provide wait and proceed signals. In exemplary embodiments, the signaling devices 18A and 18B comprise one or more colored lights, such as but not limited to red (for wait) and green (for proceed), configured to be selectively illuminated to signal the driver of a vehicle to proceed or to wait. However, any type of signaling devices 18A and 18B is contemplated, such as but not limited to, flags, signs, speakers for producing an audio signal, some combination thereof, or the like. Any number and type of signaling devices 18A and 18B are contemplated. The signaling devices 18A and 18B on various assemblies 10 may be the same or different types. The traffic signaling device 16 may be mounted to the assembly 10, such as above the stop sign 12 though any location is contemplated. In other exemplary embodiments, the traffic signaling device 16 may be located in close proximity with the assembly 10.

The assembly 10 may comprise a vehicle detection device 19. The vehicle detection device 19 may comprise one or more sensors configured to detect the presence of one or more vehicles. The vehicle detection devices 19 may comprise, for example without limitation, cameras, radar, lasers, motion detectors, light sensors, audio sensors, ultrasound sensors, infrared sensors, weight sensors, metal detectors, image recognition software, proximity detectors, some combination thereof, or the like. Alternatively, or in addition, the vehicle detection devices 19 may comprise RFID, Bluetooth®, or other short-range wireless communication devices configured to receive signals from devices installed in vehicles within signaling range of such the vehicle detection devices 19. The vehicle detection device 19 may be mounted to the assembly 10. However, in other exemplary embodiments, the vehicle detection device 19 may instead be located in close proximity with the assembly 10.

The assembly 10 may further comprise a controller 20. The controller 20 may be in communication with one or more of the traffic signaling device 16 and the vehicle detection device 19. The controller 20 may receive data from the vehicle detection device 19 and provide instructions to the traffic signaling device 16. As will be explained in greater detail, in exemplary embodiments the controller 20 is in communication with a command center 32. In such embodiments, the controller 20 may communicate information from the vehicle detection device 19 to the command center 32 and receive instructions from the command center 32, which may be relayed to the traffic signaling device 16.

The controller 20 may further comprise a time keeping device 28. The time keeping device 28 may be a clock, timing device, timer, some combination thereof, or the like. The time keeping device 28 may be in electronic communication with the processor 24. It is contemplated that the vehicle detection device 19 may alternatively or additionally comprise the time keeping device 28. Any location of the time keeping device 28 is contemplated.

The assembly 10 may further comprise a power source 21. The power source 21 may be in electrical connection with one or more of the traffic control unit 16, the vehicle detection device 19, and the controller 20. In exemplary embodiments, the power source 21 may comprise a solar panel. Alternatively, or in addition, the power source 21 may comprise one or more batteries. Alternatively, or in addition, the power source 21 may comprise a connector for connecting to utility power.

FIG. 2 is a simplified illustration of the controller 20. The controller 20 may be in communication with the vehicle detection device 19 and the traffic signaling device 16. The controller 20, and various components thereof, may be electrically connected to the power supply 21. The controller 20 may comprise one or more electronic storage devices 22, processors 24, and network connection devices 26. The electronic storage device 22 may be configured to receive and store data from the vehicle detection device 19 and/or the controller 20. The electronic storage device 22 may further comprise executable software instructions, which when executed configure the processor 24 to perform one or more of the processes disclosed herein. The processor 24 may be configured to retrieve the data and/or executable software instructions stored at the electronic storage device 22. The network connection device 26 may be configured to transmit and receive data, such as but not limited to data stored at the electronic storage device 22, to the command center 32 and/or to other remote device(s). Such communication may be accomplished by way of a network such as the internet, intranet, cellular network, world wide web, or the like. Such communication may be accomplished by wired or wireless means.

FIG. 3 is a top plan view of an exemplary intersection 36 with multiple assemblies 10. More specifically, FIG. 3 illustrates a four-way intersection where two roads 34 intersect. Four assemblies 10 may be placed near the intersection 36 such that the flow of traffic is stopped in all four directions. However, any number of assemblies 10 may be utilized with any kind or type of intersection 36 with any number of roads 34. For example, without limitation, two assemblies 10 may be placed at a four way intersection, three assemblies 10 may be placed at a three way intersection, one assembly 10 may be placed at a three way intersection, and the like.

All of the assemblies 10 for a given intersection 36 may be in electronic communication with the command center 32 by way of a wired or wireless connection. In exemplary embodiments, the command center 32 may be buried near the respective intersection 36, though any location is contemplated. It is contemplated that assemblies 10 for more than one intersection 36 may be in communication with a common command center 32.

FIG. 4 is a simplified illustration of the command center 32. The command center 32 may be in wired or wireless communication with the command centers 20 of each assembly 10 for a particular intersection 36. The command center 32, and various components thereof, may be electrically connected to a power supply 44. The power supply 44 may comprise one or more batteries. Alternatively, or additionally, the power supply 44 may comprise a connector for connecting to a utility line. Alternatively, or in addition, the power supply 44 may comprise a solar panel, wind turbine, some combination thereof, or the like.

The command center 32 may comprise one or more electronic storage devices 38, processors 40, and network connection devices 42. The electronic storage device 38 may be configured to receive and store data from the various assemblies 10. The electronic storage device 38 may further comprise executable software instructions, which when executed configure the processor 40 to perform one or more of the processes disclosed herein. The processor 40 may be configured to retrieve the data and/or executable software instructions stored at the electronic storage device 38. The network connection device 42 may be configured to transmit and receive data, such as but not limited to data stored at the electronic storage device 38, to one or more of the command centers 20 for each assembly 10 and/or other remote device(s). Such communication may be accomplished by way of a network such as the internet, intranet, cellular network, world wide web, or the like. Such communication may be accomplished by wired or wireless means.

FIG. 5 is a flow chart with exemplary logic for operating a system of the assemblies 10 at an intersection 36, such as but not limited to, the intersection 36 shown and described with respect to FIG. 3. Initially, all of the traffic signaling devices 16 for all assemblies 10 for a particular intersection 36 may be set to wait. For example, without limitation, the traffic signaling device 16 may illuminate a red colored light. The vehicle detection devices 19 for all assemblies 10 for the particular intersection 36 may continuously scan for a vehicle's arrival at the intersection 36. In exemplary embodiments, the vehicle detection devices 19 are configured to scan for vehicles located at or near the stop line 35 associated with the respective assembly 10. For example, without limitation, the vehicle detection devices 19 may periodically, continuously, or at any interval take images of the intersection and use machine vision software to determine if a vehicle is within the captured image. As another example, without limitation, the vehicle detection devices 19 may periodically, continuously, or at any interval transmit ultrasonic signals and determine if signals indicating the presence of a nearby vehicle are received.

If no vehicle is detected, the assemblies 10 may continue to scan. Once a vehicle is detected, the respective assembly 10 may determine the vehicle's arrival time at the time keeping device 28. The arrival time may be stored such as at the one or more electronic storage devices 22 of the controller 20. The arrival time may be transmitted to the command center 32. This communication, in exemplary embodiments, is made by way of the network connection device 26 in the respective assembly 10 and the network connection device 42 at the command center 32.

The command center 32 may determine if an earlier arrival time that is within a predetermined amount of time is stored at the electronic storage device 38 for the command center 32. The predetermined amount of time may be any amount of time. In exemplary embodiments, the predetermined amount of time is set such that a vehicle may safely clear the intersection. The predetermined amount of time may be set from historical information.

If no earlier arrival time falling within the predetermined amount of time is found, the command center 32 may direct the respective assembly 10 to set the respective traffic signaling device 16 to proceed. For example, without limitation, the respective traffic signaling device 16 may illuminate a green colored light.

If an earlier arrival time falling within the predetermined amount of time is determined, the command center 32 may direct the respective assembly 10 to wait a sufficient amount of time such that the predetermined amount of time is reached and subsequently instruct the assembly 10 to set the respective traffic signaling device 16 to proceed. Alternatively, the command center 32 may wait until the predetermined amount of time is reached and subsequently direct the respective assembly 10 to set its respective traffic signaling device 16 to proceed.

The vehicle detection device 19 for the assembly 10 which was directed to set its traffic signaling device 16 to proceed may scan to ensure that the vehicle signaled to proceed has actually proceeded. If the vehicle has not proceeded, the vehicle detection device 19 may continue to scan until the vehicle proceeds. In exemplary embodiments, the respective traffic signaling device 16 may take further action such as flashing a green light, emitting an audible tone, some combination thereof, or the like. Once the vehicle has proceeded, a confirmation message regarding the same may be sent to the command center 32. The command center 32 may then evaluate the next earliest vehicle arrival time, thereby repeating the process.

In other exemplary embodiments, once directing the respective traffic signaling device 16 to proceed, the command center 32 may wait a second predetermined amount of time before directing the next respective traffic signaling device 16 to proceed. The second predetermined amount of time may be the same or different as the predetermined amount of time. The second predetermined amount of time may be, for example without limitation, a certain multiple of the predetermined amount of time.

The command center 32 may then repeat the evaluation process for the next subsequently logged entry. In this way, the command center 32 evaluates and processes the arrival times in the order in which they occurred such that earlier arrival times are given priority.

It is notable that while the command center 32 is evaluating the arrival times, the assemblies 10 may be continuously scanning for vehicles, storing, and transmitting the arrival times to the command center 32. In this way, each vehicle's arrival time may be logged and addressed in turn. If no additional vehicles have arrived in the intervening time, the assemblies 10 may simply continue to scan for vehicles.

In exemplary embodiments, the vehicle detection device 19 may be capable of scanning the entire intersection 36 to determine when a vehicle has cleared the intersection. In such embodiments, once the vehicle has cleared the intersection, a confirmation message regarding the same may be sent to the command center 32. The command center 32 may then evaluate the next earliest vehicle arrival time. Each vehicle detection device 19 may comprise multiple sensors of the same or different type which may scan the same or different areas.

In the unlikely event that two identical arrival times are determined, the command center 32 may randomly direct one of the two assemblies 10 to wait the predetermined amount of time and direct the other assembly 10 to set the respective traffic signaling device 16 to proceed.

Any embodiment of the present invention may include any of the optional or preferred features of the other embodiments of the present invention. The exemplary embodiments herein disclosed are not intended to be exhaustive or to unnecessarily limit the scope of the invention. The exemplary embodiments were chosen and described in order to explain the principles of the present invention so that others skilled in the art may practice the invention. Having shown and described exemplary embodiments of the present invention, those skilled in the art will realize that many variations and modifications may be made to the described invention. Many of those variations and modifications will provide the same result and fall within the spirit of the claimed invention. It is the intention, therefore, to limit the invention only as indicated by the scope of the claims.

Certain operations described herein may be performed by one or more electronic devices. Each electronic device may comprise one or more processors, electronic storage devices, executable software instructions, and the like configured to perform the operations described herein. The electronic devices may be general purpose computers or specialized computing device. The electronic devices may be personal computers, smartphone, tablets, databases, servers, or the like. The electronic connections and transmissions described herein may be accomplished by wired or wireless means.

Claims

1. A stop sign with traffic control features comprising: a vehicle detection device associated with the stop sign and configured to sense a vehicle within signaling range of the vehicle detection device;a traffic signaling device associated with the stop sign and configured to signal the vehicle to proceed or wait;a time keeping device associated with the stop sign; anda controller associated with the stop sign and in electronic communication with the vehicle detection device, the traffic signaling device, and the time keeping device, where the controller comprises one or more processors and one or more electronic storage devices comprising executable software instructions, which when executed configure the one or more processors to: instruct the traffic signaling device to signal wait;receive data from the vehicle detection device indicating arrival of the vehicle;receive data from the time keeping device indicating an arrival time for the vehicle;transmit the arrival time to a command center;receive a signal from the command center indicating permission to proceed; andinstruct the traffic signaling device to signal proceed.

2. The apparatus of claim 1 wherein: the traffic signaling device comprises a red light and a green light.

3. The apparatus of claim 1 wherein: the vehicle detection device comprises a camera.

4. The apparatus of claim 3 further comprising: additional software instructions stored at the one or more electronic storage devices, which when executed by the one or more processors configures the one or more processors to: receive images from the camera; anddetermine if the vehicle is depicted within the received images.

5. The apparatus of claim 1 wherein: the vehicle detection device comprises an ultrasonic sensor.

6. The apparatus of claim 5 further comprising: additional software instructions stored at the one or more electronic storage devices, which when executed by the one or more processors configures the one or more processors to: transmit ultrasonic signals from the ultrasonic sensor; andmonitor for the return of reflected ultrasonic signals.

7. The apparatus of claim 1 further comprising: a mounting device.

8. The apparatus of claim 7 wherein: the mounting device is a pole;the stop sign is mounted to the pole;the vehicle detection device is mounted to the pole adjacent to the stop sign; andthe traffic signaling device is mounted to the pole adjacent to the stop sign.

9. The apparatus of claim 1 further comprising: a power source electrically connected to the controller, the vehicle detection device, and the traffic signaling device.

10. The apparatus of claim 9 wherein: the power source comprises a solar panel and a battery.

11. A traffic control system for an intersection of a plurality of roadways, said system comprising: a command center; anda number of assemblies, each located along one of the plurality of roadways at the intersection, wherein each of the number of assemblies comprises: a stop sign;a vehicle detection device configured to sense a vehicle within signaling range of the vehicle detection device;a traffic signaling device configured to signal the vehicle to proceed or wait;a time keeping device; anda controller in electronic communication with the vehicle detection device, the traffic signaling device, and the time keeping device, where the controller comprises one or more processors and one or more electronic storage devices comprising executable software instructions, which when executed configure the one or more processors to: instruct the traffic signaling device to signal wait;receive data from the vehicle detection device indicating arrival of the vehicle;receive data from the time keeping device indicating an arrival time for the vehicle;transmit the arrival time to the command center;receive a signal from the command center indicating permission to proceed; andinstruct the traffic signaling device to signal proceed;wherein the command center is in electronic communication with each of the assemblies and comprises one or more processors and one or more electronic storage devices comprising executable software instructions, which when executed configure the one or more processors to: receive the arrival time from one of the number of assemblies;determine if an earlier arrival time within a predetermined amount of time is stored at the one or more electronic storage devices; andtransmit the signal indicating permission to proceed to the one of the number of assemblies if no earlier arrival time within the predetermined period of time is found.

12. The system of claim 11 further comprising: additional software instructions stored at the one or more electronic storage devices of the command center, which when executed by the one or more processors of the command center configures the one or more processors of the command center to request confirmation from the one or the number of assemblies that the vehicle has proceeded.

13. The system of claim 11 further comprising: additional software instructions stored at the one or more electronic storage devices of the command center, which when executed by the one or more processors of the command center configures the one or more processors of the command center to wait a second predetermined period of time prior to transmitting the signal indicating permission to proceed if an earlier arrival time within the predetermined amount of time is stored at the one or more electronic storage devices.

14. The system of claim 13 wherein: the second predetermined amount of time is a multiple of an amount of time corresponding to the expected time it takes for the vehicle to exit the intersection.

15. The system of claim 11 wherein: each of the assemblies comprise a network communication device; andthe command center comprises a network communication device.

16. A method for controlling traffic at an intersection of a plurality of roadways, said method comprising the steps of: providing a plurality of assemblies at the intersection, each of the assemblies comprising a stop sign, a vehicle detection device, a traffic signaling device, a time keeping device, and a controller;providing a command center in electronic communication with the controller of each of the plurality of assemblies;setting the traffic signaling device of each of the plurality of assemblies to wait;scanning for the arrival of a vehicle at each of the plurality of assemblies;upon detection of the vehicle at a particular one of the plurality of assemblies, determining, by way of the timing device at the particular one of the plurality of assemblies, the arrival time for the detected vehicle;transmitting the arrival time to the command center;determining, at the command center, that no earlier arrival time within a predetermined amount is stored; andcommanding the particular one of the plurality of assemblies to set the traffic signaling device for the particular one of the plurality of assemblies to proceed.

17. The method of claim 16 further comprising the step of: sending confirmation from the particular one of the plurality of assemblies to the command center that the vehicle has proceeded.

18. The method of claim 16 wherein: the predetermined amount of time is a multiple of the expected amount of time for the vehicle to clear the intersection.

19. The method of claim 16 wherein: each of the plurality of assemblies is placed along one of the plurality of roadways.

20. The method of claim 18 wherein: the vehicle detection device for each of the plurality of assemblies comprises a proximity detector configured to detect the presence of a vehicle located at a side of the roadway adjacent to the respective assembly;the traffic signaling device for each of the plurality of assemblies comprises a red colored light and a green colored light; andthe time keeping device for each of the plurality of assemblies comprises a clock.