A method and device for merging road segments based on road conditions

A road section and road condition technology, applied in the field of road section merging methods and devices based on road conditions, can solve the problems of not fully reflecting the traffic flow distribution of road entrances and exits, and achieve the effect of reducing road condition fragments and reasonable road section grouping

Active Publication Date: 2017-11-03
BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The generated road section grouping signal contains many road condition fragments, which cannot fully reflect the traffic flow distribution at road entrances and exits

Method used

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  • A method and device for merging road segments based on road conditions
  • A method and device for merging road segments based on road conditions
  • A method and device for merging road segments based on road conditions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] figure 1 A flowchart of a method for merging road sections based on road conditions provided in Embodiment 1 of the present invention specifically includes the following steps:

[0035] S110. Acquire road condition characteristics of each road section within a unit period.

[0036] Wherein, the unit time period is a preset time period, exemplarily, the unit time period may be 1 minute or 5 minutes. The actual road is divided into road segments according to a preset method. The preset method includes the actual name of the road, the traffic rules of the road, and the angle at which the road bends. For example, a street named A in a city, motor vehicles Passable, the street has an inflection point, and the angle of the inflection point does not exceed 30°, the street can be identified as a road segment, if another street named B is prohibited from passing motor vehicles, then the street is not regarded as a road segment. section. The road condition characteristics of e...

Embodiment 2

[0043] The embodiment of the present invention also provides a road segment merging method based on road conditions. As a further description of the first embodiment, as figure 2 As shown, step S110 includes:

[0044] Step S111 , acquiring the travel speed and travel distance of each vehicle in the road section within a unit time period.

[0045] The driving speed of each vehicle in the road section is the average speed in the unit period, and the driving distance of each vehicle in the road section is the distance traveled by the vehicle on the road section in the unit period.

[0046] Step S112: Determine the vehicle whose travel distance of the vehicle is higher than the threshold distance as a valid vehicle.

[0047] When the distance traveled by the vehicle on the road section exceeds the preset distance, the vehicle is regarded as a valid vehicle, otherwise the relevant data of the vehicle is discarded. The data of vehicles with short driving distances are not obtaine...

Embodiment 3

[0075] A method for merging road segments based on road conditions provided in this embodiment, as a further description of the above-mentioned embodiment, as follows: Image 6 As shown in the figure, after the adjacent road sections are merged into a new road section according to the statistical results, it also includes:

[0076] Step S170: Determine a preset length interval matching each of the road segments.

[0077] Step S180: If the road section matches the first preset length interval, combine the road section with an adjacent road section.

[0078] Step S190: If the road segment matches the second preset length interval, cut and determine a first sub-road segment and a second sub-road segment from the road segment, the length of the first sub-road segment is a preset length, and the first sub-road segment The length of the second sub-road segment is the difference between the lengths of the road segment and the first sub-road segment.

[0079] Step S200: Determine a ...

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Abstract

The embodiment of the present invention discloses a road section merging method and device based on road conditions. The method includes: acquiring road condition characteristics of each road section within a unit time period; determining the road condition similarity of adjacent road sections according to the road condition characteristics; The similarity of road conditions of adjacent road segments has been determined, and the adjacent road segments that meet the merging conditions are merged into a new road segment. This method can reduce road condition fragments after road segment grouping, and can reflect the effect of road conditions and traffic flow distribution at road entrances and exits well.

Description

technical field [0001] Embodiments of the present invention relate to the field of intelligent transportation, and in particular, to a method and device for merging road segments based on road conditions. Background technique [0002] As an important part of intelligent transportation, real-time road conditions can reflect the traffic conditions in the area, guide the best and fastest driving route, and improve the efficiency of road and vehicle use. [0003] In the prior art, road segments are grouped according to road topological relationships and empirical rules, and the information of these groups is not sufficiently analyzed and mined. The generated road segment grouping signal contains many road condition fragments, which cannot fully reflect the traffic flow distribution at road entrances and exits. SUMMARY OF THE INVENTION [0004] The present invention provides a road segment merging method and device based on road conditions, so as to realize merging of adjacent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01
Inventor 张龙樊扬李翔张绍文
Owner BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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