1. Status of discussion about “Reversing Motion” in VRU-Proxi
(As of after IWG #10 discussion)
JAPAN
Akinari Hirao, Ph. D. on behalf of VRU-Proxi IWG
Caution: Most contents are still under discussion.
Described contents is not final conclusion.

2. VRU-Proxi IWG Working contents
Terms of Reference (GRSG )
(a) Forward motion:
Vehicle turning: Completion of the proposal by Germany on new provisions for Blind Spot Information Systems (BSIS): 115th session of GRSG (October 2018);
Vehicle driving straight or taking off from standstill: 118th session of GRSG (April 2020) e.g. CMS or detection system
(b) Reversing motion (e.g. Camera Monitoring Systems (CMS) or detection system): 118th session of GRSG (April 2020);
(c) Direct vision: 120th session of GRSG (April 2021).

3. Reversing motion discussion status -1-
Purpose
To provide driver vision for safety of vehicle rear direction when the vehicle moving rearward. "Close-proximity rear" view devices were proposed as new regulation.
UN Regulation No. XXX
Proposal for a new UN Regulation on uniform provisions concerning the approval of devices for reversing motion and motor vehicles with regard to the driver’s awareness of vulnerable road users behind vehicles
Scope
All categories of M and N.
Exemption under discussion.
- Vehicles that can not be reached reversing motion requirements because it is not compatible with its use (with the agreement of the technical service)
- The Vehicles fitted with an active system.
- If a vehicle has multiple devices, only devices declared by the manufacturer have to meet the provisions of the regulation

4. Reversing motion discussion status -2-
Requirements
- Field of view
The field of vision shall be bounded by the following planes and shall be such that the driver can see the conditions defined in Annex 12. In this regulation with a height of 800 mm and a diameter of 300 mm which is located on the ground plane at nine positions within the boundaries of the field of vision as defined in Figure 3 below:
(a) A transverse vertical plane through 300 mm distance from the outermost point of the rear of the vehicle;
(b) A transverse vertical plane 3,500 mm behind the outermost point of the rear of the vehicle;
(c) Two longitudinal vertical planes parallel to the longitudinal vertical median plane going through the outermost point of each side of the vehicle.

5. Reversing motion discussion status -3-
Requirements
- Pole visibility
1.1. Test objects
(a) Test objects has 0.15 m x 0.15 m painted patch that can be moved from the bottom to the uppermost of the side of the cylinder.
(b) Both the painted patch shall be of a color that contrasts with both the rest of the cylinder and the test surface.

6. Reversing motion discussion status -4-
Multimodal approach
Driver can be perceived Field of View by;
Vision
Indirect vision
Combination of close-proximity rear mirrors or other Class(es) in R46
Camera monitor system
Direct vision from newly defined driver’s looking back ocular points
Including combination with mirror mounted on rear side (looking direct is rear only)
* under discussion
Detection systems (e.g. Sonar system) * see next slides
Non confuse HMI
- Each row of poles shall be seen one method

7. Reversing motion discussion status -5-
Requirements for detection system
Detection system that satisfy Annex 13 can be equivalent for field of vision seen by vision systems (direct, indirect).
Based on ISO 17386
Detection range: 0.2~1.0m
At least 2 information signals to be provided from auditory, optical, haptics * Under discussion
Test methods are under discussion (ISO based test and alternative simple test).

8. Reversing motion discussion status -6-
Requirements for rear view image display * under discussion
Rear view camera or detection system shall be activated during “backing events”.
“Backing event” means an amount of time which starts when the vehicle's direction selector is placed in reverse by driver or system, and ends at the manufacturer's choosing, when the vehicle forward motion reaches:
(a) a speed of 16 km/h,
(b) a distance of 10 meters traveled, or
(c) a continuous duration of 10 seconds.
(d) the vehicle's direction selector is not placed in reverse.
Rear view image can be modified to other camera view by driver or automatically by system.
Safety related screen change acceptable (e.g. system failure, eCall etc)
Safety related information overlay acceptable (e.g. parking guide etc.)

9. Reversing motion discussion status -7-
System pausing function * under discussion
Rear view camera
Switched off by driver * under discussion (FMVSS allowed)
System failure
Automatic detection of coupling
Detection
At least 1 information signal from 2 modality can be off by driver.

10. Reversing motion discussion Latest information
Latest discussion material used in IWG #10
IWG #10 minutes to be posted here.
Further activity
- Working document for GRSG 117th session reflecting IWG #10 discussion as much as possible to be submitted until 12, July.
- Next VRU-Proxi IWG #11 on 24-26,Sep. at London
- Propose draft reflecting IWG #11 discussion as informal document in 117th GRSG on 8-11, Oct.