GB/T 44489-2024Requirements for examination of advanced assistant driving map (English PDF)

4.3 Requirements for confidentiality processing of spatial location

4.3.1 Processing methods The spatial location confidentiality processing of the advanced assistant driving map shall be completed in accordance with the methods specified in GB 20263.

4.3.2 Processing accuracy The plan-positional accuracy of the advanced assistant driving map after spatial position confidentiality processing shall not be better than 10 m (not included). NOTE: Precision is measured by standard deviation.

4.3.3 Supporting documents The spatial location confidentiality processing method used by the advanced assistant driving map shall obtain a supporting document that has been approved by the national competent authority.

4.4 Materials submitted for review Materials submitted for review of the advanced assistant driving map shall include but not be limited to the following materials.

a) Application form for map review.

b) Data of map submitted for review.

c) Map description, including: 1) Description of map data, including data source, data coverage, user objects, data volume, data storage method, principles for handling confidential content, and examples of handling confidential content; 2) Map data application description, including product functions, usage, etc.; 3) Description of map data application management measures, including safety emergency response mechanism, emergency response time, etc.

d) Documents proving that the spatial location has been kept confidential, and

g) Other content that is prohibited from being disclosed by the state.

5.2.2 Road entities The road entities involved in the advanced assistant driving map shall meet the following requirements:

a) Facilities on the roadside and above the road are expressed as point symbols (single points) to indicate the existence of ground features;

b) Do not use point clouds, real-life images or other measured results to express roads and their related attribute information. NOTE: Facilities on the roadside and above the road mainly include traffic lights, traffic signs, poles, obstacles (such as safety islands), etc.

5.3 Place names or names of points of interest The place names or names of points of interest in the advanced assistant driving map shall meet the following requirements:

a) Do not contain the names of the ground feature entities in 5.2.1;

5.4 Ground feature attributes

5.4.1 Ground feature attributes that shall not be included The advanced assistant driving map shall not contain the following ground feature attributes:

a) The height limit, width limit, clearance, load capacity and slope of the bridge;

b) the height and width of the tunnel;

c) Road paving materials;

d) The relative heights of facilities on the roadside and above the road;

5.4.2 Road slope and curvature

5.4.2.1 Road slope The road slope field in the advanced assistant driving map shall meet the following requirements.

a) Do not express the true slope value.

b) The slope value can be expressed using graded values after grading processing and in accordance with the following rules: 1) The slope angle value is graded, and the grading interval is not better than 0.1°; 2) If expressed in other ways, the grading interval after conversion into the slope angle value shall not be better than 0.1°. NOTE: The slope includes the transverse slope value and the longitudinal slope value.

5.4.2.2 Road curvature The road curvature field in the advanced assistant driving map shall meet the following requirements.

a) Do not express the true curvature value.

b) The curvature value can be expressed using the graded value after grading processing and in accordance with the following rules: 1) The curvature value is graded, and the grade interval is not better than 10- 5m-1; 2) If expressed in other ways, the grading interval after conversion into the curvature value shall not be better than 10-5m-1. NOTE: The curvature value is the reciprocal of the curvature radius.