Brief: This draft mainly sets the minimum requirements and limitations on the close-proximity front and lateral field of vision/detection capability and realistic logic of M1 and N1 vehicles.

Draft UN R166 applies to M1, N1 vehicles equipped with close-proximity front and lateral vision/detection devices. Under this regulation it is possible to apply for parts certificate -close-proximity front and lateral view mirror  and vehicle certificate - vehicle installation of means of front and lateral vision or detection.

This regulation regulates the vehicle's close-proximity front and lateral area awareness, information display strategy and system logic to ensure that the driver can accurately perceive the vehicle's front and left and right blind zones (Figure 1), better anticipate and perceive possible dangers and injuries that may occur, and further protect the lives of vulnerable road users in actual vehicle driving scenarios.

1.The vehicle shall be equipped with at least one means of vision or awareness. 

Any means using one or several electronic system(s) (e.g. vision camera systems, detection systems), may be activated upon the driver's request.

2.Devices for means of front and lateral vision or detection

2.1.The installation of the device does not cause obstruction of the driver's forward and lateral vision.

2.2.The device must not extend far beyond the body of the vehicle, beyond what is necessary to detect the field of view.

2.3.The device is not subject to arbitrary movement, vibrations that may alter the image and cause misjudgement by the driver, and the lines of the device are not exposed.

3.Range of blind area created by the A-pillar or exterior rear-view mirror is excluded from the field of vision or detection.

For Visibility: The legislation sets out the requirements for visibility of the front and Lateral blind areas of the vehicle to enhance the driver's perception of the vehicle's surroundings, The field of vision shall be bounded by the following planes(see Figure 3): 

a.A transverse vertical plane passing through a point 300 mm from the contour of the sides of the vehicle;

b.A transverse horizontal plane passing through a point 300 mm from the contour of the front of the vehicle;

c.Areas ahead of the centre of the side mirrors on the driver's seat side and the passenger seat side. 

The following measures can be used to provide visibility coverage of the area

1. Via the direct view from ambinocular vision from the adjusted driver’s ocular points.

2. Via a device of indirect vision (mirror or CMS or other) approved to UN Regulation No. 46; or

3. Via a means of indirect vision for front and lateral vision (mirror or camera system or other) complying with this Regulation; or

4. Via a device of detection system; or

5. Via a combination of the means described in the1 to 4. and declared by the manufacturer.

An example of the coverage of the area by different measures is shown in Figure 4, where the test was verified using cylinders with a length of 1m and a diameter of 0.3m (shown in blue circles in the figure), which were all visible to the driver if the test was successful.

For detection: The range of the car's close front and Lateral detection is narrower compared to the field of view required, and only the front Lateral profile area between 200mm and 300mm from the front profile needs to be covered, as shown in Figure 4.

Different types of systems (ultrasonic-based systems and radar-based systems) have different detection capabilities. Under the same test scene layout, cylinders placed in this area have different diameter requirements.

a.Ultrasonic detection system Cylinder material: wood/metal/hard plastic Cylinder diameter d=75mm L=1m (quote ISO17386:2010.7.1)

b. Radar detection system Cylinder material: metal Cylinder diameter d=25mm L=1m (quote ISO 17386:2010.7.1)

Common configuration:

For the vehicles equipped with the radar and the 360° panoramic visual assist system, the follow plans are required：

R10.05certificate for the detection system + R10 certificate for the FLVCS + whole vehicle close-proximity front and lateral-view field test= whole vehicle detection test 

Note:  

Detection system: all detection sensors + screens/other optical/haptics/audio warning devices + other accessories

FLVCS: All cameras for front and lateral vision + screens + other accessories

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