The best way to determine if your car seat is installed safely is to check how it moves up and back and side to side. You do not want more than 1 inch of movement in any direction to be sure it is installed correctly. Also, if you are ever in an accident and your car seat is in the car, make sure you have it checked for safety. Most manufacturers require your car seat to be replaced after an accident. At Collision Pros in Auburn, Chico, Red Bluff, Woodland and Paradise we will check the seat for you for Free.