AAA says nearly 43-million people will kick off the summer with a Memorial Day Weekend getaway.
The vast majority of those holiday travelers will drive to their destinations, despite rising gas prices.
That's about 3.5% more than last year and the most on record for the holiday.
Experts say motorists could experience delays up to 3 times longer than normal evening commutes.
Drivers in the most congested metro areas should anticipate delays starting as early as Wednesday and continuing through Memorial Day.
AAA advises drivers to avoid the morning and evening commute times if possible or plan alternate routes.