You must allow sufficient safe clearances for aisles, at loading docks, through doorways and wherever turns or passage must be made where mechanical handling equipment is used. You must keep aisles and passageways clear and in good repair, with no obstruction across or in aisles that could create a hazard. You must ensure that aisles and passageways are appropriately marked.
Wash. Admin. Code § 296-24-21501
Order 73-5, § 296-24-21501, filed 5/9/73 and Order 73-4, § 296-24-21501, filed 5/7/73.