MG ZS Series Manual page 216

STARTING & DRIVING
of the vehicle, the monitored areas are 2m ahead , 7m
behind the rear of the vehicle, and 4.7m from the side
of the vehicle.
Note: The warning lamps will not illuminate whilst
you are overtaking another vehicle and your speed is
greater than that of the vehicle you are passing, even
though it is in the blind zone.
200
Lane Change Assist (LCA)
When the vehicle is driving forward, the system will
monitor the motor vehicles approaching rapidly in the
adjacent lanes. When the indicators are activated, and the
conditions for activating the lane change assist function
are met, the system will flash the warning lamp within the
respective mirror to warn the driver of an approaching
vehicle. This aims to help avoid collisions when changing
lanes.