Collision Mitigation Braking System (CMBS) Description

Function

The CMBS can detect a possible collision and assists brake operation to help reduce the impact on the vehicle.

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CMBS Operation Sequence:

When a speed difference between your vehicle and the vehicle is more than 3 mph (5 km/h) and the system detects a possible collision, the system issues a warning message on the multi-information display (MID) and sets an alarm off.
When your vehicle is getting close to the vehicle ahead or the pedestrian of your vehicle, the system issues a warning message on the MID and sets an alarm off to give the warning to the driver that there is a possible collision (first step). For an opposing vehicle, the system vibrates the steering wheel to give an additional warning to the driver.
When your vehicle gets even closer to the vehicle ahead or pedestrian ahead of your vehicle and the system anticipates a collision, CMBS applies light braking force while issuing the MID warning and setting an alarm off (second step).
When the system determines that a collision is inevitable, CMBS applies strong brake force while issuing the MID warning and setting an alarm off (third step).

Courtesy of HONDA, U.S.A., INC.

The multipurpose camera unit records the number of operations from vehicle ON mode to OFF (LOCK) mode. When the limit for the number of operations is exceeded, "excessive CMBS operation" is judged, the CMBS function is disabled, the CMBS indicator comes on and DTCs are stored. The limit for the number of operations differs according to the CMBS operation conditions.
When the multipurpose camera unit is malfunctioning (including a temporary function stop), CMBS does not function.

Operation Conditions

		Vehicle Ahead	Opposite Vehicle	Pedestrian
Conditions for the object		Passenger vehicles, subcompact, or large vehicle (The system may have difficulty recognizing two wheeled vehicles, like motorcycles, or other unusual body styles. The system will function as designed if the vehicles are detected).		The system uses an analysis method using preprogrammed human figure patterns to detect pedestrians (heights need to be approximately 1 to 2 meters (3 ft to 6 ft) for the system to recognize figures as pedestrians). Pedestrians behind the vehicle, and persons crossing the road. - In some cases, persons crossing the road may not be detected if they jump out onto the road or are running. - The system may detect human-shaped signboards along the road as actual pedestrians depending on the shape and material.
System operation conditions	Operation vehicle speed	About 3 mph (5 km/h) or more	Between about 3 mph (5 km/h) and 62 mph (100 km/h).
	Relative velocity	About 3 mph (5 km/h) or more	About 9 mph (15 km/h) or more	About 3 mph (5 km/h) or more
	Environment conditions *	There is sufficient visibility and light available for the multipurpose camera to recognize objects In environments where millimeter wave transmission/reception is not blocked (Some weather conditions such as fog, snowfall may have impact on system operation)

*: For more details on environmental conditions and objects that are hard to recognize, refer to the Owner's Manual.