Does your smoke detector only work during daytime hours?
Having a non-reflective address sign on your house, mailbox, or in your yard is like having a smoke detector that only works during daytime hours. If your address sign is not highly visible and cannot be seen and read from hundreds of feet, you are putting your family at unnecessary risk.
You owe it to yourself and your family to eliminate this dangerous risk. We all hope we never need to call for help, but the chances are that one day we will.