Maryland - Competitive foods—HS: Federal requirement
2017 Maryland Education Code 7-423 Timing controls on vending machines.
(a) Applicability. -- This section only applies to vending machines in public schools that sell food items of minimal nutritional value, as defined by the Department. Timing devices to control access to machines
(b) In general. -- By August 1, 2006, vending machines in public schools shall have and use a timing device to automatically prohibit or allow access to vending machines in accordance with the nutrition policies established by the county board.