Shulou(Shulou.com)11/24 Report--

On September 16, CTOnews.com, Amap officially announced the launch of a new function of "mileage data service", which covers more than 95% of the country's high-speed mileage based on Gaode accurate map data and mileage acquisition and positioning technology, and the dynamic conversion capacity of stations is accurate to the meter level. The average precision of standard precision products is 10 meters, and that of high precision products is 10 centimeters.

CTOnews.com learned from the official that the service provides a variety of functions for highway users, including mileage station query, longitude and latitude matching station, station to longitude and latitude, station corresponding road dynamic and static information query and so on.

Coordinate to station: used in accidents, road rescue and other scenarios, quickly locate the location of rescue users, to achieve the above picture, planning, car dispatch integration.

Station coordinate: used for information release scene, owner's internal construction, accident, closure and other station text information, automatically transformed into longitude and latitude, and quickly realize spatialization.

Dynamic and static information query: you can quickly access the corresponding road information, query related road conditions, congestion index, events and other information through the station.

Gaodi pile service is an important infrastructure in the overall high-speed solution. Based on the "Expressway Operation efficiency Analysis platform", it provides three business scenarios: mileage station retrieval, mileage station coordinate transfer and mileage station transformation.

Scenario 1: mileage station retrieval mileage pile query service: the sub-road station can be obtained to realize the spatialization of the station location, which can be used for monitoring and early warning and visualization of the image above. At the same time, it supports road + station retrieval and fast positioning.

Local station service: it can quickly locate and query the highway section location information service corresponding to the local station data, and realize the road name + mileage station retrieval ability. For example, the K210-K238 Zunyi section of G7521 Chongqing expressway can be mapped to the K102-K130 of Zunyi highway around the city.

Road association query: through the ID of the road section corresponding to the station, the designated road section is found in the road information, road condition, event and index service, and the multi-service linkage is realized. For example, the starting and ending position information of the road, the length of the road, the number of lanes, speed limit and so on. In addition, the mileage station retrieval service can also query the relevant toll stations, service areas and other road facilities information to help users obtain more comprehensive road information.

Scene 2: coordinate to mileage station to station service: match the coordinate and road relationship to get the corresponding position of the station accurate to the meter. Support single point query, direction, uplink / downlink, fuzzy assignment of road name. Can be used to achieve graphical display and station-based map calculation scenarios.

Scene 3: mileage station to coordinate station to coordinate: through the whole kilometer and meter text information, transformed into road coordinates, accurate to the meter level along the road to calculate longitude and latitude. Realize the text space, information release above picture, user notification, effect evaluation closed loop.

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