Acura 2011 RL Owner's Manual page 432

Collision Mitigation Braking System (CMBS )
YOUR VEHICLE
Driving in heavy, stop-and-go
traffic.
The vehicle ahead of you is a
motorcycle or other small vehicle.
426
TM TM
YOUR VEHICLE
A vehicle suddenly crosses in front
of you.
The CMBS is not designed to detect
pedestrians.
This system is designed to detect
and provide sufficient advanced
warning of a collision. As a result,
you may experience occasional false
activations.
Even with little or no chance of a
collision, the CMBS may activate
under these conditions:
When you change lanes quickly,
and go around the vehicle ahead
of you.