GB/T 39265-2020Road vehicles—Performance requirements and testing methods for blind spot detection (BSD) system (English PDF)

3.1 Blind spot detection; BSD

Real-time monitoring of the driver's blind area of vision, making prompts or warnings when other road users appear in the blind area.

3.2 Subject vehicle

In accordance with the requirements of this standard, the vehicle under test for the BSD system test.

3.3 Adjacent area

The area located on and adjacent to the left and right sides of the subject vehicle.

3.8 Right turn blind spot detection

When the vehicle turns right, the blind spot on the right side of the driver is monitored in real time, meanwhile a warning message is issued when other road users appear in the blind area.

3.9 Self-check

The function of the system to check its own faults.

4.1 Overview

4.1.1 When the subject vehicle is driving straight, the blind spot detection system for categories M and N vehicles shall be able to detect the target vehicle in the left and right adjacent areas of the subject vehicle and issue a warning when it enters the detection range.

4.2 System on and off

The BSD system shall have the function of manual ON or OFF.

When it is manually turned off, the status indication shall be given with an indication signal in accordance with 4.4.2.

4.3 Activation requirements

When the BSD system is turned on and in an inactive state, the system can detect the target vehicle, but shall not warn the driver. When the BSD system is activated, the system can be activated by at least one of the following methods.

4.4 Human-computer interaction requirements

4.4.1 Warning method

The system shall send out warning messages in a way that is easy to be perceived by the driver and can clearly indicate the side where the target vehicle appears. The warning indication information shall be clearly distinguished from the warning information of other systems in the vehicle.

4.4.2 On/off indication requirements

The system shall have an indication of the on/off state. The indications shall be visible visually.

4.4.3 System failure indication requirements

The system shall have a system failure indication reminder function. Its reminder status identification shall be clearly observed by the driver.

4.5 Self-check requirements

The system shall have at least the following self-check functions.

4.6 Others

The signs of the controls, indicators and tell-tales of the blind spot detection system shall meet the relevant requirements of GB 4094.

5.1 Overview

5.1.1 Blind spot detection range for categories M1, N1 vehicles

The blind spot detection range of categories M1 and N1 vehicles is as shown in Figure 4.

5.2 Technical requirements

5.2.1 Target vehicle test requirements

The blind spot detection function shall cover the adjacent areas on the left and right sides.

5.2.2 Warning requirements for blind spot detection function

5.2.3 System response

5.2.3.1 System response time

When the target vehicle enters the blind spot detection range from the side and rear, the time from when the target vehicle enters the blind spot detection range to when the system issues a warning shall not exceed 300 ms.

5.2.3.2 Optional blind spot warning suppression

If the subject vehicle is overtaking the target vehicle, meanwhile the target vehicle enters the monitoring range from the front, the blind zone warning can be suppressed for a period of time; the warning suppression time shall not be greater than 2 s.

6.1 Test environment conditions

6.1.1 The test shall be carried out on a level, dry concrete or asphalt pavement with good adhesion.

6.2 Test measurement system

6.2.1 Requirements for test measurement system

The test measurement system shall meet the following requirements. […]

6.2.2 Accuracy requirements for test measurement system

The test measurement system shall be able to achieve the following accuracy.

6.3 Blind spot detection test

6.3.2 Test under straight-line driving conditions

6.3.2.3 Target vehicle overtaking subject vehicle test on straight-line road

The subject vehicle travels in a straight line at a constant speed of (50 ± 2) km/h; the target vehicle drives in a straight line at a constant speed in the adjacent lane and maintains a lateral distance from the subject vehicle at (1.5 ± 0.3) m;

6.3.2.5 Dual target vehicle overtaking subject vehicle on straight road

The subject vehicle travels in a straight line at a constant speed of (50 ± 2) km/h; the target vehicle travels in a straight line at a constant speed in the adjacent lane at (60 ± 2) km/h and maintains a lateral distance of (1.5 ± 0.3) m from the subject vehicle, as shown in Figure 10.

6.3.3.1 Test scene and vehicle speed setting

Use the marking line and the bicycle dummy to establish a right-turn blind spot detection and alarm test scene for vehicles of categories M2, M3, N2, N3 according to the layout and size parameters of the test facilities specified in Figure 11 and Table 2. […]