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Road section combination method and device 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: 2016-01-27
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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  • Road section combination method and device based on road conditions
  • Road section combination method and device based on road conditions
  • Road section combination method and device based on road conditions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] figure 1 A flow chart 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. Obtain the road condition characteristics of each road section within a unit time period.

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

Embodiment 2

[0043] The embodiment of the present invention also provides a method for merging road segments based on road conditions, as a further description of Embodiment 1, as follows figure 2 As shown, step S110 includes:

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

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

[0046] Step S112, determining the vehicle whose travel distance is higher than a 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 a short driving distance is not ...

Embodiment 3

[0075] This embodiment provides a method for merging road segments based on road conditions, as a further description of the above embodiments, as follows Figure 6 As shown, after merging adjacent road segments into new road segments according to the statistical results, it also includes:

[0076] Step S170, determining a preset length interval matching each road section.

[0077] Step S180, if the road segment matches the first preset length interval, merge the road segment with an adjacent road segment.

[0078] Step S190, if the road section matches the second preset length interval, segment the road section to determine a first sub-road section and a second sub-road section, the length of the first sub-road section is a preset length, and the second sub-road section is The length of the second sub-segment is the difference between the lengths of the road segment and the first sub-segment.

[0079] Step S200. Determine the preset length interval that the second sub-secti...

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Abstract

The embodiment of the invention discloses a road section combination method and device based on road conditions, and the method comprises the steps: obtaining the condition features of each road section in a unit time period; determining the road condition similarity of adjacent road sections according to the road condition features; and combining the adjacent road sections meeting the combination conditions into a new road section in a road section combination period according to the determined road condition similarity of adjacent road sections. The method can reduce the road condition fragments after road section grouping, and well reflects the road conditions and the exit and entrance traffic flow distribution of a road.

Description

technical field [0001] The embodiments of the present invention relate to the field of intelligent transportation, in particular to a method and device for merging road sections 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 routes, and improve the efficiency of roads and vehicles. [0003] The prior art groups the road sections according to the road topological relationship and empirical rules, but does not fully analyze and mine the information of these groups. The generated road section grouping signals contain many road condition fragments, which cannot fully reflect the traffic flow distribution at road entrances and exits. Contents of the invention [0004] The invention provides a method and device for merging road sections based on road conditions, so as to realize the merging of adjacent roads wi...

Claims

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Application Information

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Patent Type & Authority Applications(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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