Memorial Day travel is expected to break records this year nationwide and in Southern California. Why it matters: Roads and airports will likely be packed as locals leave town and visitors arrive to celebrate the unofficial start of summer.

AAA predicts that 45 million people in the United States, including 1.7 million Ohioans, will travel 50 or more miles over the Memorial Day weekend, but not all necessarily to go on vacations.

Holiday travelers are expected to pack the nation's roads over the Memorial Day holiday.