The access area must be at least 12 feet wide and at least 125 feet in a straight line. The area must be flat and obstacle free for the driver to navigate the trailer.
To calculate the required clearance length, the length of the trailer must be added to 60' of clearance for the delivery equipment plus 20' to maneuver the equipment. (40' + 60' + 20' = 120')
Check all access paths and confirm you have at least 20' of over head clearance from the ground to the lowest point of the overhanging item.