PDFRCW 79A.45.060
Insurance requirements for operators.
(1) Every operator of an aerial lift, surface lift, or similar device shall maintain liability insurance of not less than one million dollars per occurrence.
(2) This section shall not apply to operators of tramways that are not open to the general public and that are operated without charge, except that this section shall apply to operators of tramways that are operated by schools, ski clubs, or similar organizations.