If a derailment of a freight or passenger train threatens public health or safety, or the disruption of rail service affecting interstate commerce, State, county, and municipal authorities shall allow necessary emergency equipment to be moved expeditiously to the site of the derailment, unless doing so poses an immediate risk to public health and safety as determined by the Secretary of Transportation or designee. (Added 2001, No. 75 (Adj. Sess.), § 12, eff. Feb. 19, 2002.)