Speed limiting information base generation and speed limiting information detection method and system

Abstract

The invention discloses a speed limiting information base generation and speed limiting information detection method and system. The speed limiting base generation method includes the steps of collecting original vehicle track point information; conducting data washing for all vehicle track point information in the original vehicle track point information to obtain all vehicle track standardized information, wherein the track standardized information includes the road numbers, the track lengths, the track starting point moments, the track ending point moments and the first average speeds; extracting the first average speeds of all vehicles to form cluster object sets according to the road numbers and preset time periods; calculating vehicle speed limiting information corresponding to roads and the time periods for all the cluster object sets to generate a speed limiting information base. According to the method and the system, the speed limiting information of the whole area of the current road is reflected, the renewing period of the speed limiting information is shortened, and therefore the up-to-date state of the speed limiting information is enhanced, and the speed limiting information of the road can be detected under the condition that the speed limiting information does not completely cover the whole area.

Description

Technical field [0001] The invention relates to the technical field of traffic data processing, in particular to a method for generating a speed limit information database, a system for generating a speed limit information database, a method for detecting speed limit information, and a system for detecting speed limit information. Background technique [0002] With the increase in the number of cars, a reasonable speed limit is an indispensable management measure to ensure road safety and efficient operation. Since each road has a different speed limit, and the unmanned speed measurement equipment can be arranged anywhere, it is necessary to detect the speed limit information of the road to control the speed of the vehicle. [0003] At present, there are two main methods for detecting the speed limit information of different sections of each road in the traffic road network. One is to use the speed limit information of the government competent transportation department. The governm...

AI Technical Summary

Problems solved by technology

However, the map update cycle drawn by commercial map companies is generally relatively long, some update cycle is a quarter, and some update cycle is half a year, resulting in weak current situation of the road speed limit information in the map

[0005] In addition, for the government's competent transportation department, the maintenance of the speed limit information database is only for the speed limit information of the main road sections in their respective administrative regions. The speed limit information detected based on the speed limit information database cannot be used nationwide, and cannot Comprehensive coverage of speed limit information on all roads; for commercial map companies, the maintenance cycle of the speed limit information database is long, and the speed limit information detected based on the speed limit information database is prone to lag

Images