UN R158 Supplement 3 (00 series) · UNECE Regulation No. 158 (ECE R158) — Uniform provisions concerning the approval of devices and motor vehicles with regard to the driver’s awareness of vulnerable road users behind vehicles when reversing.
UN R158 — Supplement 3 to the 00 series of amendments
Supplement 2 → 3
- What changed
- Paragraph 16.1.1.4. permits a temporary change of the view to enable an improved view while manoeuvring. During this temporarily modified view, it is permitted that the requirements on the default view (paragraph 16.1.) and object size (paragraph 16.1.1.) are not fulfilled.
- For temporary obstruction, paragraph 16.1.3.1. now refers to the conditions in new paragraph 1.3.3.5. of Annex 9.
- New paragraph 1.3.3.5. of Annex 9 applies to a monitor located behind a temporary obstacle, for example a steering wheel spoke.
- Why
- The aim of the new wording of paragraph 16.1.1.4. is to improve the clarity of the provision, without changing the requirements or adding new provisions.
- The second section of paragraph 16.1.3.1. accounts for potential temporary obstructions, for example through a rotated steering wheel.
- The new procedure in Annex 9 uses the driver's ocular points as a basis, to avoid unnecessary complexity of the assessment procedure.
Q1What changed10 changes
Deactivation wording (para. 16.1.1.3.)
Paragraph 16.1.1.3. now says that the view “may” be manually switched off when the vehicle is not moving rearward. Before this supplement, it said “can”. A comma is also added before “or the backing event is finished”.
Temporary change of view while manoeuvring (para. 16.1.1.4.)
Paragraph 16.1.1.4. permits a temporary change of the view to enable an improved view while manoeuvring, for example when there is a risk of collision. During this temporarily modified view, it is permitted that the requirements on the default view (paragraph 16.1.) and object size (paragraph 16.1.1.) are not fulfilled. It must be demonstrated, to the satisfaction of the Technical Service and Type Approval Authority, that this change of view increases the safety. Before this supplement, the field of view could change and focus on the collision area when there was a risk of collision. It had to be demonstrated to the Technical Service that this change of view increases the safety. The field of view could also change following the vehicle trajectory when the vehicle was not driving straight.
Monitor visibility and temporary obstruction (para. 16.1.3.1.)
Paragraph 16.1.3.1. now says that “the regulated field of vision displayed on the monitor” must be visible without any obstruction from the ocular reference point. Before this supplement, it said “the monitor defined size”. In case of temporary obstruction, the driver must be able to see the close proximity rear view field of vision under Annex 9, paragraph 1.3.3.5. The words “A virtual testing” also change to “Virtual testing”.
Monitor behind a temporary obstacle (Annex 9, para. 1.3.3.5.)
New paragraph 1.3.3.5. of Annex 9 applies to a monitor located behind a temporary obstacle, for example a steering wheel spoke. It says when the close proximity rear view field of vision must be visible to the driver in all normal reversing motion conditions. This is when the driver is restrained by the installed crash protection system, adjusted in accordance with the manufacturer's instructions. The driver is also free to move within the constraints of that system, for example head movement. Ambinocular vision from the driver's ocular points is considered. Virtual testing is acceptable.
Q2Why it changed
- Proposed by
- Expert from the Informal Working Group on Awareness of Vulnerable Road Users Proximity
- Working party
- GRSG, 126th session
Reasons
The proposal replaces “can” with “may” in paragraph 16.1.1.3. to improve the wording.
Source
“Furthermore, improvement of the wording is proposed by replacing "can" by "may".”
The aim of the new wording of paragraph 16.1.1.4. is to improve the clarity of the provision, without changing the requirements or adding new provisions.
Source
“The new wording shall improve the clarity of the provision, without changing the requirements or adding new provisions.”
The first section of paragraph 16.1.3.1. defines the default condition with the steering wheel in a straight-ahead position. The second section accounts for potential temporary obstructions, for example through a rotated steering wheel. It refers to a newly introduced test procedure under Annex 9.
Sources (3)
“The first section defines the default condition with the steering wheel in a straight-ahead position, which is the monitor being visible without obstructions from the ocular points.”
“The second section accounts for potential temporary obstructions, e.g. through a rotated steering wheel.”
“This section then refers to a newly introduced test procedure under Annex 9, see below.”
The test procedure in paragraph 1.3.3.5. of Annex 9 applies only when the monitor is temporarily obstructed. In that case, the driver's eye is allowed to move to the left or right, but only within the constraints of the restraint system.
Sources (2)
“This test procedure only applies when the monitor is temporarily obstructed.”
“In such a case the driver’s eye shall be allowed to be moved to the left or right, but only within constraints of the restraint system.”
To avoid unnecessary complexity of the assessment procedure, the procedure uses the driver's ocular points as a basis. An assessment for “all possible driver sizes and seating positions”, as proposed in GRSG-125-20, would lead to undefined conditions, because driver sizes and seat adjustment ranges are not regulated.
Sources (2)
“To avoid unnecessary complexity of the assessment procedure it shall use the driver’s ocular points as a basis.”
“Extending the assessment to "all possible driver sizes and seating positions" as proposed in GRSG-125-20 would lead to undefined conditions, as driver sizes and seat adjustment ranges are not regulated.”
Document trail
- —ProposalGRSG-125-20Original proposal submitted by the IWG on VRU-Proxi
- 2023-07RevisedECE/TRANS/WP.29/GRSG/2023/20Proposal for Supplement 3, intended as replacement of GRSG-125-20
- —Working party adoptsECE/TRANS/WP.29/GRSG/105GRSG adopted the proposal not amended (session report, para. 10)
- 2023-12Sent to WP.29ECE/TRANS/WP.29/2024/12Text that GRSG sent to WP.29 and AC.1
- 2024-03WP.29 adoptsECE/TRANS/WP.29/1177Adopted at the 192nd session (session report, para. 140)
- 2024-09-22In forceC.N.422.2024.TREATIES-XI.B.16.158UN depositary notification
Q3Who is affected
Vehicle manufacturer
- In case of temporary obstruction, check the close proximity rear view field of vision under Annex 9, paragraph 1.3.3.5.
Component supplier
- No direct action for this role.
Technical service / Approval authority
- For monitors behind a temporary obstacle, test the close proximity rear view field of vision to Annex 9, paragraph 1.3.3.5.
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ⓘ This report gives advice only. It is not legal or type-approval advice.