Traffic road condition acquisition method and device
A technology of traffic road conditions and roads, applied in the direction of traffic flow detection, etc., can solve problems such as inaccuracy and insufficient road condition information.
Active Publication Date: 2014-11-19
ALIBABA (CHINA) CO LTD
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[0008] Embodiments of the present invention provide a method and device for obtaining traffic conditions, which are used to solve the problem that the road condition information obtained through the existing methods of obtaining traffic conditions is not fine enough and not accurate enough
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[0026] In the existing traffic road condition acquisition method, for a road, it can only be determined whether the traffic condition in the straight direction of the road is smooth, congested or slow, but usually, a road also includes left turn, right turn, U-turn lanes, and the traffic conditions of different lanes are not exactly the same. The existing acquisition method can only describe the traffic conditions in the straight direction, and cannot provide the traffic conditions of different lanes on the road. In this way, the road traffic conditions obtained by the user are not detailed enough And not accurate enough. Based on the above problems, the embodiments of the present invention provide a method and device for obtaining traffic conditions. Through the correlation processing of the floating car trajectory data, the road conditions of the non-straight lanes of the road can be accurately obtained, and more detailed information can be provided for the user. Road condit...
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An embodiment of the invention provides a traffic road condition acquisition method and device. The method includes: receiving floating car trajectory data carrying locating information; according to the floating car trajectory data, determining the driving position of the floating car on a road in a set period of time and a driving direction of the floating car at a crossing of the road; if the driving direction is judged to be a non-straight direction, according to the locating information corresponding to the driving position of the floating car on the road, calculating driving time of the floating car for driving from a driving position with a first set distance from the crossing to the crossing in the set period of time; and according to a corresponding relation of the driving time and a preset driving time threshold value and traffic road conditions, determining traffic road conditions of lanes in the non-straight direction of the road in the set period of time. Through the abovementioned road condition acquisition method, road condition information of the lanes on the road in the non-straight direction can be acquired, and diverse requirements of a user can be satisfied.
Description
technical field [0001] The invention relates to the field of traffic information processing, in particular to a method and device for acquiring traffic conditions. Background technique [0002] In the existing field of traffic information processing, the following methods are usually used to obtain the traffic conditions of each road in the road network: [0003] Firstly, receive the trajectory data uploaded by the floating vehicle with the positioning device installed on it for a period of time, and perform redundant processing on the trajectory data to obtain the actual trajectory data of the floating vehicle during this period; here, the trajectory data can include floating Vehicle identification, location information, etc.; [0004] Then, according to the actual trajectory data, determine the road that the floating car is driving on the electronic map, and the driving position on the determined road. The specific determination process is as follows: first, according to ...
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Inventor 胡润波
Owner ALIBABA (CHINA) CO LTD