GB/T 44461.2-2024 English PDF (GBT44461.2-2024)

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GB/T 44461.2-2024: Intelligent and connected vehicle - Technical requirements and testing methods for combined driver assistance system - Part 2: Multi-lane maneuvre
GB/T 44461.2-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
CCS T 40
Intelligent and Connected Vehicle - Technical Requirements
and Testing Methods for Combined Driver Assistance
System - Part 2.Multi-lane Manoeuvre
ISSUED ON. AUGUST 23, 2024
IMPLEMENTED ON. AUGUST 23, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
Introduction... 4
1 Scope... 5
2 Normative References... 5
3 Terms and Definitions... 5
4 General Requirements... 7
5 Performance Requirements... 10
6 Test Methods... 15
Appendix A (normative) Functional Safety Requirements... 26
Bibliography... 30
Intelligent and Connected Vehicle - Technical Requirements
and Testing Methods for Combined Driver Assistance
System - Part 2.Multi-lane Manoeuvre
1 Scope
This document specifies the general requirements and performance requirements and describes
the test methods for the multi-lane manoeuvre of intelligent and connected vehicles.
This document is applicable to Category-M and Category-N vehicles equipped with multi-lane
manoeuvre system.
NOTE. in the absence of confusion, the “multi-lane manoeuvre system” in this document is referred
to as the “system” in short.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB 5768.3 Road Traffic Signs and Markings - Part 3.Road Traffic Markings
GB/T 12534 Motor Vehicles - General Rules of Road Test Method
GB 34660 Road Vehicles - Requirements and Test Methods of Electromagnetic Compatibility
GB/T 44373-2024 Intelligent and Connected Vehicle - Terms and Definitions
GB/T 44461.1-2024 Intelligent and Connected Vehicle - Technical Requirements and Testing
Methods for Combined Driver Assistance System - Part 1.Single-lane Manoeuvre
3 Terms and Definitions
The terms and definitions defined in GB/T 44373-2024 and GB/T 44461.1-2024, and the
following are applicable to this document.
3.1 multi-lane manoeuvre system
A combined driver assistance system that continuously controls the lateral and longitudinal
motion of the vehicle in accordance with the surrounding driving environment and assists the
change procedure, including the lane change preparation phase, lane change
manoeuvre phase and lane change completion phase under other road conditions that
do not fall into a) and with no less than two lanes in the vehicle driving direction, then,
it has the ability to detect and respond to motor vehicles, pedestrians and non-motor
vehicles, and does not enter the lane change manoeuvre phase where the lane
boundary line is a solid line.
4.1.2 During the lane change manoeuvre phase, the system shall ensure that a suitable safety
space is maintained with forward and backward vehicles in the target lane.
4.1.3 In addition to the safety response strategy adopted to avoid special situations, for example,
collision risks, the lateral motion of the system during the lane change preparation phase and
lane change manoeuvre phase shall remain continuous.
4.1.4 In accordance with 6.6 and 6.7, carry out the test. The system shall only be able to trigger
the lane change procedure when the single-lane driving control is activated; after the lane
change procedure is completed, the vehicle shall automatically resume the single-lane driving
control.
4.1.5 In accordance with 6.8, carry out the test. The system shall only be able to trigger the lane
change procedure when no hands-off prompt signal is issued; after the lane change procedure
is completed, the vehicle shall automatically resume the single-lane driving control.
4.1.6 While performing the lane change procedure, the system shall not continuously change
two or more lanes.
4.1.7 When the vehicle speed is less than the vsmin-ML declared by the vehicle manufacturer, the
system shall not trigger the lane change procedure.
4.2 Self-inspection
The system shall complete self-inspection before triggering the lane change procedure and be
equipped with at least the following self-inspection functions. When an abnormal state is
detected, it shall not enter the lane change preparation phase.
a) Check whether the relevant electrical components have failed;
b) Check whether the relevant sensing elements have failed.
4.3 Driver Operation
4.3.1 The system shall at least trigger the lane change procedure through the turn signal light
control part.
4.3.2 The system shall respond to the driver’s active intervention in vehicle motion control.
4.3.3 After the driver cancels the lane change procedure through a single operation at any time,
the system shall cancel the current lane change procedure.
4.4 Cancelation of Lane Change Procedure
4.4.1 If any of the following situations occurs while the system executes the lane change
procedure, the current lane change procedure shall be cancelled.
a) The system’s lane change wait reaches the upper limit of the time required in 5.3.2.
b) When the lane change manoeuvre phase starts, a hands-off prompt signal is issued. If
the cancellation of the lane change procedure due to b) may bring potential safety
risks to the self-propelled motion control or other traffic participants, then, the system
may adopt other safety response strategies different from the cancellation of the lane
change procedure.
4.4.2 If the current lane change procedure is cancelled, then, the system may enter a new lane
change procedure after the driver executes the lane change procedure triggering mode.
4.5 Prompt Signal
4.5.1 The system shall continuously emit an optical prompt signal during the lane change
procedure, and when executing the safety response strategy, it shall send out a prompt signal
that is different from those in other states of the system.
4.5.2 If the lane change procedure is canceled, the system shall send out a prompt signal that
complies with the following requirements.
a) If the driver actively cancels the lane change procedure or the lane change procedure
is canceled due to 4.4.1 a), the system shall at least notify the driver of the current
system status through an optical signal;
b) If the lane change procedure is canceled due to reasons other than 4.4.1 a), the system
shall at least notify the driver of the current system status through an optical signal,
and additional acoustic and / or tactile signals.
4.5.3 Except for lane change wait, the system shall keep the turn signal light on during the lane
change procedure and comply with the following requirements.
a) If the turn signal light control part is not in the locked position during the lane change
procedure, the turn signal light shall be automatically turned off when the single-lane
driving control is restored;
b) If the turn signal light control part is in the locked position during the lane change
procedure, a lane change completion prompt signal shall be sent when the single-lane
driving control is restored.
4.5.4 If a system fault occurs during the lane change procedure, the system shall...