How do I know if the seat is safely locked before driving?

Before driving, confirm the seat is locked by checking that the Seat Lock Indicator is GREEN. When you lift the Rotation Handle to rotate the seat for loading or unloading, the Seat Lock Indicator will turn RED, indicating it is not locked. The Revolve360 Slim must be locked whenever the vehicle is moving, as it is not designed to protect your child in a crash when unlocked. (Page 41)