BS ISO 22078:2020 Intelligent transport systems — Bicyclist detection and collision mitigation systems (BDCMS) — Performance requirements and test procedures. BDCMS active state
BDCMS shall enter this state if the vehicle speed is greater than or equal to v, and less than
mm max
In the BDCMS active state, it shall monitor for triggering conditions resulting in the selection of EB and decide to activate countermeasures or optionally override if so instructed by the operator. BDCMS may optionally provide a CW to the driver.
If a system failure is detected or there is an inability to perform a countermeasure, BDCMS shall transfer to the BDCMS inactive state if automatic recovery from the failure is possible. If the system fails, and a self-test results in a case where automatic recovery without driver intervention is not possible, BDCMS shall transfer to the BDCMS off state. Means of notification of these failures to the driver is left up to the manufacturer.
5.3 System types
There are two types of BDCMS:
— type 1: BDCMS is capable of daytime activation;
— type 2: BDCMS is capable of daytime, twilight and night-time activations.
5.4 System classes
There are two classes of BDCMS:
— class 1: BDCMS operate on light vehicles only,
— class 2: BDCMS operate on heavy vehicles only.
5.5 Performance requirements
5.5.1 General
I3DCMS shall, at a minimum, provide an ER countermeasure based on determination of a hazardous situation.
5.5.2 Hazardous situation
BDCMS shall monitor the area forward of the SV, whenever it is in the active state, to determine if a hazardous situation exists.
Typical hazardous situations such as longitudinal and crossing ones are shown in Figure 3. BDCMS shall determine if a hazardous situation exists for any relative bicyclist approach angle and size of bicyclist.BS ISO 22078 pdf download.