ISO/TS 23792-1:2023

TECHNICAL ISO/TS
SPECIFICATION 23792-1
First edition
2023-06
Intelligent transport systems —
Motorway chauffeur systems (MCS) —
Part 1:
Framework and general requirements
Systèmes de transport intelligents — Systèmes de conduite
automatisée sur voie à chaussée séparée (MCS) —
Partie 1: Cadre et exigences générales
Reference number
© ISO 2023
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Published in Switzerland
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Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 4
5 Characteristics of MCS . 4
5.1 General . 4
5.2 Operational design domain . 4
5.2.1 General . 4
5.2.2 Roadway physical characteristics . 5
5.2.3 Traffic in the surrounding environment . 6
5.2.4 Abnormalities in roadway operational condition . . 6
5.2.5 Ambient environmental conditions . 6
5.3 System functionalities . 6
5.3.1 General . 6
5.3.2 Basic functionalities to realize in-lane operation . 7
5.3.3 Lane changing functionalities . 7
5.4 System limitations . 7
5.5 Providing information to the user . 7
6 Operational requirements . 8
6.1 Operating conditions . 8
6.1.1 General . 8
6.1.2 Engagement conditions . 8
6.1.3 Disengagement triggering conditions . 8
6.1.4 Direct disengagement conditions . 8
6.2 State transition . 8
6.2.1 General . 8
6.2.2 Off state . 9
6.2.3 Standby state . 10
6.2.4 Normal state . 11
6.2.5 Requesting fallback state.12
6.3 System functions .12
6.3.1 General .12
6.3.2 Object and event detection and response (OEDR) .13
6.3.3 Vehicle motion control (VMC) . 13
6.3.4 Generation of request to intervene (RTI) . 14
6.3.5 Status indication . 14
6.3.6 User control interface . 16
6.3.7 FRU input detection . 16
6.3.8 MCS monitoring the FRU . 17
6.3.9 Subject vehicle condition monitor . 18
6.3.10 MCS condition monitor . 18
6.3.11 Localization. 18
6.3.12 External warning generation . 18
6.3.13 Function required for route following functionalities . 18
6.3.14 Related functions . 18
6.4 Requirements for continuing operation after detecting disengagement-triggering
conditions . 19
6.4.1 General . 19
6.4.2 Classification of adverse situations . 19
6.4.3 Responses to adverse situations . 20
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7 Minimum performance requirements of the DDT .20
7.1 General . 20
7.2 Operating speed range . 21
7.3 Normal operation . 21
7.3.1 Sustained longitudinal vehicle motion control . 21
7.3.2 Sustained lateral vehicle motion control . 21
7.3.3 Crash avoidance . 22
7.4 Performance-impaired operation . 22
7.5 MCS reaction to unresponsive FRU . 22
8 Test procedures .23
8.1 General .23
8.1.1 Purpose .23
8.1.2 Driving environment . 23
8.1.3 System settings and test driver roles . 23
8.1.4 Common test pass criteria . 23
8.1.5 Confirmation of the HMI design . 23
8.1.6 Success rate and number of trials . 24
8.1.7 List of test scenarios . 24
8.1.8 Test sites . 24
8.2 Scenario 1: MCS reaction to unresponsive FRU . 25
8.2.1 Test scenario .25
8.2.2 Pass criteria .25
8.3 Scenario 2: Direct disengagement by steering input . 25
8.3.1 Test scenario .
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