System for public transit incident rate analysis and display

• US 10,157,509 B2
• Filed: 12/28/2016
• Issued: 12/18/2018
• Est. Priority Date: 12/28/2016
• Status: Active Grant

• Current Assignee: Conduent Business Services, LLC (Conduent, Inc.)
• Original Assignee: Conduent Business Services, LLC (Conduent, Inc.)
• Inventors: Dolan, Bryan R., Handley, John C.
• Primary Examiner(s): Mott, Adam R
• Application Number:
  US15/392,714
• Publication Number:
  US 20180182181A1
• Time in Patent Office: 720 Days
• CPC Class Codes: G06T 11/001 Texturing; Colouring; Generation of texture or colour inpainting G06T5/77
• CPC Class Codes: G06T 11/206 Drawing of charts or graphs
• CPC Class Codes: G06T 11/60 Editing figures and text; Combining figures or text
• CPC Class Codes: G07B 15/02 taking into account a variable factor such as distance or time, e.g. for passenger transport, parking systems or car rental systems G07B15/06 takes precedence; taximeters G07B13/00; parking meters per se G07F17/24; car rental systems per se G07B15/00
• CPC Class Codes: G08G 1/127 to a central station ; Indicators in a central station
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources

Abstract

An incident management system in a public transit network receives incident data collected by one or more sensors of the transit network, segments a display screen into multiple cells so that each of the cells corresponds a route segment and a time segment in which one or more vehicles in the transit network traveled, and outputs a graphical representation for each cell. The sensors may be installed on a vehicle to detect various types of incidents such as disturbance, safety and mechanical issues, or any incidents external to the vehicle. The graphical representation may be indicative of the estimated future incident rate for the route segment and the time segment to which each cell corresponds, and displayed by a color scale in a heatmap. The system may estimate the incident rate using a linear model that can be obtained in a training process.

Claims

1. An incident management system in a public transit network, comprising:

a processor; and

a computer readable medium containing a set of programming instructions configured to cause the processor to;

receive public transit system incident data collected by one or more sensors of the public transit network;

cause an electronic display device to segment a display screen into a plurality of cells so that each of the cells corresponds to one of a plurality of route segments and one of a plurality of time segments, so that each cell represents a portion of a route which one or more vehicles of the public transit network traveled over a period of time;

determine, based on the incident data, a cumulative incident rate pertinent to each of the cells;

identify a linear model comprising a set of parameters indicative of effects of one or more route segments and one or more time segments on the cumulative incident rate;

use the linear model and the cumulative incident rate to estimate a future incident rate for each of the cells; and

cause the electronic display device to output a graphical representation for each of the plurality of cells so that the graphical representation is indicative of the estimated future incident rate for the route segment and the time segment to which each cell corresponds.

2. The system of claim 1 further comprising the one or more sensors installed on a transportation vehicle in the public transit network.

3. The system of claim 1, wherein the programming instructions to determine the cumulative incident rate pertinent to each of the cells comprise programming instructions to:

determine a cumulative incident count representing incidents that occurred to selected transportation vehicles in the public transit network that have traveled during the route segment and the time segment to which that cell corresponds; and

determine the cumulative incident rate based on the cumulative incident count and a number of passengers riding the selected transportation vehicles during the route segment and the time segment to which that cell corresponds.

4. The system of claim 1, wherein the programming instructions for estimating the future incident rate comprise programming instructions configured to cause the processor to:

for each of the cells;

calculate a sum of parameters for the plurality of route segments and the plurality of time segments, wherein each of the parameters is one of the set of parameters of the linear model that corresponds to the route segment or the time segment to which the cell is pertinent, and

determine the estimated future incident rate based on the calculated sum.

5. The system of claim 4, wherein the computer readable medium contains additional programming instructions configured to cause the processor to determine the set of parameters of the linear model by:

receiving incident data from the one or more sensors as training data, the incident data representing a cumulative incident rate pertinent to a route segment and a time segment, in which one or more transportation vehicles in the public transit network have traveled; and

applying linear regression to the training data to determine the set of parameters, wherein each parameter corresponds to a route segment or a time segment.

6. The system of claim 2, wherein the one or more sensors comprise:

an audio sensor system configured to receive a spoken report of an incident from a driver of the transportation vehicle;

or

an audio and/or video sensor configured to capture audio and/or video signals and detect a disturbance on the transportation vehicle based on the captured audio and/or video signals.

7. The system of claim 2, wherein the one or more sensors also comprise an accelerometer configured to record a harsh braking or abnormal acceleration of the transportation vehicle.

8. The system of claim 2, wherein the one or more sensors also comprise a lifting equipment sensor configured to record information indicative using of a lifting device on the transportation vehicle.

9. The system of claim 2, wherein the one or more sensors also comprise one or more electrical sensors configured to record information indicative a breakdown of the transportation vehicle.

10. The system of claim 1, wherein the programming instructions for outputting the graphical representation for each cell comprise programming instructions to provide a heatmap by:

identifying a color scale having a low end representing a lowest value of the future incident rate and an opposing high end representing a highest value of the future incident rate, wherein the color scale comprises a number of colors and/or illuminations to indicate different values; and

causing the electronic display device to display each cell in the color scale based on the estimated future incident rate for the route segment and time segment to which each cell corresponds.

11. The system of claim 10, wherein the programming instructions for identifying the color scale comprises programming instructions configured to cause the processor to:

automatically determine the number of colors in the color scale, each color in the color scale corresponding to a threshold and representing an incident rate that is above the threshold;

or

prompt a user to adjust the color scale.

12. The system of claim 1, wherein the programming instructions configured to cause the processor to cause the electronic display device to output the graphical representation for each of the plurality of cells on the display screen comprise instructions to make the graphical representation indicative of:

a cumulative incident count representing incidents that occurred to selected transportation vehicles in the public transit network that have traveled during the route segment and time segment to which the cell corresponds;

or

an incident rate that is pertinent to the route segment and the time segment to which the cell corresponds.

13. A method of managing incidents in a public transit network, comprising:

collecting, by one or more sensors in a public transit network, public transit system incident data;

receiving, by a processor, public transit system incident data collected by the one or more sensors of the public transit network;

causing, by the processor, an electronic display device to segment a display screen into a plurality of cells so that each of the cells corresponds to one of a plurality of route segments and one of a plurality of time segments, so that each cell represents a portion of a route which one or more vehicles of the public transit network traveled over a period of time;

determining, by the processor, a cumulative incident rate pertinent to each of the cells based on the incident data;

identifying, by the processor, a linear model comprising a set of parameters indicative of effects of one or more route segments and one or more time segments on the cumulative incident rate;

by the processor, using the linear model and the cumulative incident rate to estimate a future incident rate for each of the cells; and

causing, by the processor, the electronic display device to output a graphical representation for each of the plurality of cells so that the graphical representation is indicative of the estimated future incident rate for the route segment and the time segment to which each cell corresponds.

14. The method of claim 13, wherein determining the cumulative incident rate pertinent to each of the cells comprises:

determining a cumulative incident count representing incidents that occurred to selected transportation vehicles in the public transit network that have traveled during the route segment and the time segment to which that cell corresponds; and

determining the cumulative incident rate based on the cumulative incident count and a number of passengers riding the selected transportation vehicles during the route segment and the time segment to which that cell corresponds.

15. The method of claim 13, wherein estimating the future incident rate comprises, for each of the cells:

calculating a sum of parameters for the plurality of route segments and the plurality of time segments, wherein each of the parameters is one of the set of parameters of the linear model that corresponds to the route segment or the time segment to which the cell is pertinent; and

determining the estimated future incident rate based on the calculated sum.

16. The method of claim 15 further comprising determining the set of parameters of the linear model by:

receiving incident data from the one or more sensors as training data, the incident data representing a cumulative incident rate pertinent to a route segment and a time segment, in which one or more transportation vehicles in the public transit network have traveled; and

applying linear regression to the training data to determine the set of parameters, wherein each parameter corresponds to a route segment or a time segment.

17. The method of claim 13 further comprising:

receiving, by the processor, via an audio sensor, a spoken report of an incident from a driver of a transportation vehicle;

or

capturing, by the processor, via an audio and/or video sensor, audio and/or video signals and detecting a disturbance on the transportation vehicle based on the captured audio and/or video signals.

18. The method of claim 13 further comprising:

recording, by the processor, via an accelerometer, a harsh braking or abnormal acceleration of a transportation vehicle.

19. The method of claim 13 further comprising:

recording, by the processor, via a lifting equipment sensor, information indicative using of a lifting device on a transportation vehicle.

20. The method of claim 13, wherein the one or more sensors also comprise one or more electrical sensors configured to record information indicative a breakdown of the transportation vehicle.

21. The method of claim 13, wherein outputting the graphical representation for each cell comprises providing a heatmap by:

identifying a color scale having a low end representing a lowest value of the future incident rate and an opposing high end representing a highest value of the future incident rate, wherein the color scale comprises a number of colors and/or illuminations to indicate different values; and

causing the electronic display device to display each cell in the color scale based on the estimated future incident rate for the route segment and time segment to which each cell corresponds.

22. The method of claim 21, wherein identifying the color scale comprises:

automatically determining the number of colors in the color scale, each color in the color scale corresponding to a threshold and representing an incident rate that is above the threshold;

or

prompting a user to adjust the color scale.

23. The method of claim 13, wherein causing the electronic display device to output the graphical representation for each of the plurality of cells on the display screen comprises making the graphical representation indicative of:

a cumulative incident count representing incidents that occurred to selected transportation vehicles in the public transit network that have traveled during the route segment and time segment to which the cell corresponds;

or

an incident rate that is pertinent to the route segment and the time segment to which the cell corresponds.