For parking where you can turn your reversing camera on while driving forward.

The Tesla Model 3 has a reversing camera that you can turn on while driving forward.

This print is placed at the entrance to your garage and you drive into your garage with the reversing camera turned on.

When you are getting close to objects at the rear of your garage, you will see the sign appear in your reversing camera - first the green, then the yellow and then red, so you know when to slow down and when to stop.

You can see this in action here -