From the Associated Press — It’s a roadside ritual in rural Michigan: Shake your mailbox before the snow flies. County road commissions are urging Michigan residents to check the stability of their mailboxes, the ones that are planted along roads at the end of driveways. Mailbox posts that are unstable can be knocked down by snow thrown by plows. A loose post or mailbox probably needs to be repaired. In Ottawa County in western Michigan, people can get a new mailbox or post if they’re damaged by snow thrown by Road Commission equipment.