Keep Your Address Visible! 
For your safety, make sure your home address is visible from the road during the day AND at night.
Use reflective numbers that are free from any obstructions. If your address is on your mailbox, it must be plainly visible when a vehicle is approaching the mailbox from either direction on the street.
Numbers on houses and mailboxes should be checked periodically for anything that may obstruct their view. Every second counts if there is an emergency and the responders are trying to find your home.