ISO 23792-1:2026

Intelligent transport systems — Motorway chauffeur systems (MCS) — Part 1: Framework and general requirements

Scope

Motorway chauffeur systems (MCS) perform Level 3 automated driving on limited access motorways with the presence of a fallback-ready user (FRU).
This document describes a framework of MCS including system characteristics, system states and transition conditions and system functions.
This document specifies requirements for the basic set of functionalities of a MCS, and test procedures to verify these requirements.
The requirements include vehicle operation to perform the entire dynamic driving task (DDT) within the current lane of travel, to issue a request to intervene (RTI) before disengaging, and to extend operation and temporarily continue to perform the DDT after issuing an RTI.
Requirements and test procedures for additional functionalities (such as lane changing) are provided in other parts of the ISO 23792 series.
Means related to setting a destination and selecting a route to reach the destination are not within the scope of this document. This document applies to MCS installed in light vehicles[9].