Is this a once off or are you planning to move them back too?
The real issues with moving hives is them overheating, both from being locked down and exposed to sun/heat on the trailer. The other concern is the frames moving around in the hive during transport crushing/killing bees.
Personally, I would shut them down at night and try and do as much of the travel as possible at night/in the early morning before the heat of the day. Make sure there is adequate ventilation so the bees don’t overheat (ie. don’t seal all vents/entrances completely, allow airflow) and make sure the frames are secured/pushed up against each other (and if possible, secured with a wedge/chock) to prevent combs from bouncing off the frame stays or hitting each other and crushing the bees between.
Another minor suggestion when transporting bees is to have the frames in the hive runing front to back on the trailer or in the car, not side to side, as this will prevent the combs from swinging up and pressing together under braking.