Dodge 2016 Challenger Owner's Manual page 177

UNDERSTANDING THE FEATURES OF YOUR VEHICLE 175
Lane Changing
ACC may not detect a vehicle until it is completely in the
lane in which you are traveling. In the illustration shown,
ACC has not yet detected the vehicle changing lanes and
3
it may not detect the vehicle until it's too late for the ACC
system to take action. ACC may not detect a vehicle until
it is completely in the lane. There may not be sufficient
distance to the lane-changing vehicle. Always be atten-
tive and ready to apply the brakes if necessary.
Lane Changing Example