J2945/A_202404 Minimum Requirements for Road Geometry and Attributes Definition

Issued

04/01/2024

Features
Issuing Committee
Scope
Content
This report specifies the minimum requirements for the Road Geometry and Attributes (RGA) data set (DS) to support road geometry related motor vehicle safety applications. Contained in this report are a concept of operations, requirements, and design, developed using a detailed systems engineering process. Utilizing the requirements, the RGA DS is defined, which includes the DS Abstract Syntax Notation One (ASN.1) format, data frames, and data element definitions.
The requirements are intended to enable the exchange of the messages and their DS information to provide the desired interoperability and data integrity to support the applications considered within this report, as well as other applications which may be able to utilize the DS information. System requirements beyond this are outside the scope of this report.
Rationale
Content
Earlier Vehicle-to-Infrastructure (V2I) road mapping information definitions provided in the SAE J2735 MAP message data set (DS) were tailored toward specific road geometry configurations (i.e., intersections and road segments) with the corresponding road attributes associated with them nested within each geometric definition. As such, it is not always possible to apply the available MAP definitions to other road geometries or to easily apply new attribute definitions that may be identified. In addition, size constraints were placed on the message DS, which makes it difficult to develop maps for complex or large distance road geometries. This report defines a new road geometry and attributes (RGA) data set to address these limitations.
Meta TagsDetails
DOI
https://doi.org/10.4271/J2945/A_202404
Pages
299
Citation
SAE International Recommended Practice, Minimum Requirements for Road Geometry and Attributes Definition, SAE Standard J2945/A_202404, Issued April 2024, https://doi.org/10.4271/J2945/A_202404.
Additional Details
Publisher
Published
Apr 01
Product Code
J2945/A_202404
Content Type
Recommended Practice
Status
Issued
Language
English

Revisions