GB/T 42517.1-2023Intelligent transportation systems - Intelligent driving electronic road data model and expression specification - Part 1: Controlled access road (English PDF)

1 Scope

GB/T 42517.1-2023 defines the map an automated vehicle drives on. A high-definition map for intelligent driving is not a navigation map with more detail: it is a model in which lanes are objects with geometry, boundaries, connectivity and rules, accurate to centimetres, because the vehicle localises itself against it and plans within it. Whether two suppliers' maps can be used interchangeably, and whether a vehicle can cross from one map provider's coverage to another's, depends entirely on the data model being the same. This part specifies the framework data model for controlled access roads within the electronic road data model for intelligent driving, together with the data model and expression of roads, lanes and roadside facilities. Controlled access roads - motorways and expressways - come first for good reason: they are the environment where automated driving is deployed earliest, having no pedestrians, no intersections and predictable geometry. It applies to the production and application of such maps. Under intelligent transport systems, it is written for map providers, for automated driving developers, and for the road authorities whose infrastructure data feeds it.

This document specifies the framework data model of controlled access roads in the electronic road data model for intelligent driving, the data model and expression of roads and lanes, road facilities. This document is applicable to the production and application of intelligent driving electronic road data models, which use controlled access roads as the main scene.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, for dated references, only the version corresponding to the date applies to this document; for undated references, the latest version (including all amendments) applies to this document.

GB/T 20267-2006 Criterion of digital map production for automotive navigation system

GB/T 35645-2017 Framework data exchange format for navigation electronic map

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Road reference line In the intelligent driving electronic road data model, the vector geometric line segment representing the road AND is drawn along the road according to the rules, which is composed of three-dimensional polylines in space.

3.2 Virtual road reference line It is a vector line segment, that connects two road reference lines, does not represent the actual road segment, but is only used to maintain the topological relationship between the road reference lines.

3.3 Pole-like objects The general term for upright rod-shaped objects, such as columns, used to support traffic signs, street lights, traffic lights, gantry and other traffic facilities, as well as billboard support columns.

3.4 Controlled access road An access road, which is specially designed for motor vehicles to drive in different directions and lanes, where the access is controlled.

3.5 Non-controlled access road A road for mixed driving of motor vehicles and non-motor vehicles.

6 Road facilities...