"Principal place of business" means a building actually occupied where the public and the department may contact the owner or operator during regular business hours.
"Regular business hours" means to be consistently open to the public on a weekly basis at hours reported to the motor vehicle division. Regular business hours shall include a minimum of 32 posted hours between 7 a.m. and 9 p.m., Monday through Friday.
This rule is intended to implement Iowa Code sections 321H.2 and 321H.4.
Iowa Admin. Code r. 761-431.1