When you are standing with your vehicle before an intersection while the red light is on, and you notice a security vehicle behind you, with its siren on and its lights flashing:

You should get on the sidewalk (pavement) in order to clear the way for the security vehicle.

You should enter the intersection while the red light is on.

You are not allowed to enter the intersection while the red light is on.

You are permitted to enter the intersection while the red light is on as well.