METHOD TO DETERMINE TRAFFIC CHARACTERISTICS IN ROAD TRAFFIC

• US 20140095059A1
• Filed: 08/28/2013
• Published: 04/03/2014
• Est. Priority Date: 09/28/2012
• Status: Abandoned Application

• Current Assignee: Telenav GmbH (TeleNav, Inc.)
• Original Assignee: Skobbler GmbH
• Inventors: Kandal, Philipp
• Application Number:
  US14/012,078
• Publication Number:
  US 20140095059A1
• Time in Patent Office: Days
• US Class Current: 701/119
• CPC Class Codes: G08G 1/00 Traffic control systems for road vehicles arrangement of road signs or traffic signals E01F9/00 ; automatic vehicle control B62D
• CPC Class Codes: G08G 1/0112 from the vehicle, e.g. floating car data [FCD]
• CPC Class Codes: G08G 1/0133 for classifying traffic situation
• CPC Class Codes: G08G 1/0141 for traffic information dissemination

Abstract

A method for determining road traffic characteristics utilizing movement data of vehicles which have communication devices trackable by radio positioning. The data includes time and place data regarding acceleration and braking maneuvers recorded by the communication devices. Chronological progression of acceleration and braking maneuvers is evaluated with respect to the occurrence of a predetermined characteristic pattern for a specific traffic characteristic. When such a pattern is detected and is linked to the location at which the maneuvers took place, this location is determined to be the location of the traffic characteristic. A report regarding the characteristic and its location is submitted to a central data collection point. In the central data collection point, the reports are evaluated. When a threshold number of similar reports from various users regarding the traffic characteristic at a certain location is exceeded, then this characteristic is classified as being reliably determined at the corresponding location.

Claims

1. A method to determine traffic characteristics in road traffic from movement data of vehicles driven by drivers using communication devices trackable by means of radio positioning, particularly satellite radio positioning, wherein

i) time and place data regarding acceleration and braking maneuvers for the vehicles are recorded by means of the communication devices;

ii) a chronological progression of acceleration and braking maneuvers of a specific vehicle with respect to an occurrence of a predetermined characteristic pattern for a specific traffic characteristic is evaluated;

iii) when the predetermined characteristic pattern for the specific traffic characteristic is detected and is linked to a location at which the corresponding acceleration and/or braking maneuvers took place, this location is determined to be the location of the traffic characteristic and a report regarding the specific type of traffic characteristic and its location is submitted to a central data collection point; and

iv) in the central data collection point, the reports being received are evaluated and when a threshold number of similar reports from various users regarding the specific type of traffic characteristic at a certain location is exceeded, then this traffic characteristic is classified as being reliably determined at the corresponding location.

2. The method according to claim 1, wherein, in Step ii), an evaluation occurs regarding the occurrence of the predetermined characteristic pattern, at least in the braking maneuvers, for the specific traffic characteristic.

3. The method according to claim 1 wherein the evaluation according to Step ii) occurs in the communication device.

4. The method according to claim 1 wherein the communication devices transfer the data recorded in Step i) to a central evaluation point, at which the evaluation according to Step ii) occurs.

5. The method according to claim 1, wherein during the determination of the specific traffic characteristic, a speed at which the specific vehicle moves before the braking or acceleration maneuver, is also included and, particularly, the report according to Step iii) does not occur unless said speed exceeds a specified threshold.

6. The method according to claim 1, wherein the recording of the data also includes a time in Step i) and, in addition to the location, the time of the determination of the specific traffic characteristic is reported to the central data collection point in Step iii).

7. The method according to claim 6, wherein the specific traffic characteristic determined once in accordance with Step iv) is discarded as being no longer in existence if there are no further confirmed reports of the specific traffic characteristic being received at the central data collection point in a predetermined timeframe.

8. The method according to claim 1, wherein the movement data is determined from a chronological pattern of location positions of the communication devices determined via radio positioning.

9. The method according to claim 1, wherein the movement data regarding the acceleration and braking maneuvers is determined by acceleration sensors integrated in the communication device or connected to said communication device using signal technology.

10. The method according to claim 1, wherein when the predetermined characteristic pattern for the specific traffic characteristic is detected in the chronological progression of the acceleration and/or braking maneuvers, the type of traffic characteristic assumed, based on the pattern, is indicated to the driver by the communication device and once this is confirmed, the information is transmitted to the central data collection point.

11. A traffic guidance system having the following:

i) a plurality of communication devices set up for radio positioning and for route guidance that are used individually in a vehicle to which they are assigned;

ii) a central data collection point that is set up for receiving data transmitted by means of the communication devices;

iii) a data transmitter that is connected to the data collection point and is set up to transmit traffic guidance data to the communication devices;

wherein the communication devices are set up to record time and location data regarding acceleration and braking maneuvers for the respective vehicle to which they are assigned,

wherein the communication devices are set up to evaluate the recorded data with respect to the occurrence of a predetermined characteristic progression in the braking and/or acceleration maneuvers for a specific traffic characteristic and for determining such a traffic characteristic,

wherein the communication devices are set up to transfer signals representing the specific traffic characteristic and the location of its occurrence to the central data collection point,

wherein the data collection point is set up to evaluate the specific traffic characteristic as being reliably determined when the data transferred by a predetermined number of communication devices enable the detection of a similar traffic characteristic at a location, and

wherein the data transmitter is set up to transmit information to the communication devices regarding the type and location of the specific traffic characteristic determined to be reliable as traffic data.

12. A method to determine a speed monitoring device set up in road traffic from movement data of vehicles driven by drivers using communication devices trackable by means of radio positioning, particularly satellite radio positioning, wherein

i) time and place data are recorded by means of the communication devices regarding acceleration and braking maneuvers of the respective vehicles to which the communication devices are assigned, as well as a speed at which the respective vehicle is moving before and after a braking or acceleration maneuver;

ii) a chronological progression of acceleration and braking maneuvers as well as a driving speed of a specific vehicle with respect to the occurrence of the following characteristic pattern is evaluated;

starting from a first driving speed, a braking maneuver is detected that leads to an abrupt deceleration of the vehicle in which the first driving speed is significantly reduced, followed by an acceleration maneuver until a second driving speed is reached that is less than the first driving speed;

iii) when the characteristic pattern described in ii) is detected, that pattern is linked to a specific location at which the corresponding acceleration and/or braking maneuvers took place, this location is determined to be the location of the traffic characteristic, and a report regarding the type of traffic characteristic and specific location is submitted to a central data collection point; and

iv) at the central data collection point, reports being received are evaluated, and when a threshold number of similar reports are present with the characteristic pattern according to ii) at the specific location is exceeded, then reports of the corresponding location indicating a speed monitoring device set up there are determined to be reliable.

13. The method according to claim 12, wherein the evaluation according to Step ii) occurs in the communication device.

14. The method according to claim 12, wherein the communication devices transfer the data recorded in Step i) to a central evaluation point, where the evaluation according to Step ii) occurs.

15. The method according to claim 12, wherein the report according to Step iii) does not take place until the first driving speed of the vehicle before the braking maneuver in Step ii) exceeds a predefined threshold value.

16. The method according to claim 12, wherein the recording of the data also includes a time in Step i) and, in addition to the location, the time of determination of the traffic characteristic is reported to the central data collection point in Step iii).

17. The method according to claim 16, wherein the speed monitoring device determined once in accordance with Step iv) is discarded as being no longer in existence if there are no further confirmed reports of it being received at the central data collection point in a predetermined timeframe.

18. The method according to claim 12, wherein the movement data is determined from the chronological pattern of the location positions of the communication devices determined via radio positioning.

19. The method according to claim 12, wherein the movement data regarding the acceleration and braking maneuvers is determined by acceleration sensors integrated in the respective communication device or connected to said device using signal technology.

20. The method according to claim 12, wherein when a pattern characteristic for a speed monitoring device according to ii) is detected, the driver is notified of the assumed presence of the speed monitoring device by the communication device, and the driver is prompted to confirm this, whereupon when the confirmation is received, the information is transmitted to the central data collection point.

21. A traffic guidance system having the following:

i) a plurality of communication devices set up for radio positioning and for route guidance that are used individually in a vehicle to which they are assigned;

ii) a central data collection point that is set up for receiving data transmitted by means of the communication devices;

iii) a data transmitter that is connected to the data collection point and is set up to transmit traffic guidance data to the communication devices;

wherein the communication devices are set up to record time and location data regarding driving speed as well as acceleration and braking maneuvers for the respective vehicle to which they are assigned;

wherein the communication devices are set up to evaluate the recorded data with respect to an occurrence of a following characteristic pattern in the braking and/or acceleration maneuvers and for a resulting determination of the presence of a speed monitoring device at a specific location;

starting from a first driving speed, a braking maneuver is recorded that leads to abrupt deceleration of the vehicle, in which the first driving speed is significantly reduced, followed by an acceleration maneuver until a second speed is reached that is less than the first driving speed;

wherein the communication devices are set up to transfer signals representing the speed monitoring device and the location of its occurrence to the central data collection point; and

wherein the data collection point is set up to evaluate the speed monitoring device as being reliably determined when the data transferred by a predetermined number of communication devices enables the detection of such a device at a location, and

wherein the data transmitter is set up to transmit information to the communication devices regarding the location of the speed monitoring device determined to be reliable as traffic data.