(1) Except where specifically authorized by the department, it is unlawful for any person or persons to stop, stand, or park any vehicle, including but not limited to trailers, campers, and motorcycles, for more than ((
eight))
four hours
within a twenty-four hour period, or for any person or persons to camp or to maintain a camp, tent, or other sleeping accommodation or facility, in any ((
rest area or)) safety rest area within the limits of the right-of-way of interstate highways or other state highways or in other areas of state or interstate highways as designated in RCW
47.12.250. ((
This section does not apply to disabled vehicles.))
The department may also designate zones within a safety rest area with shorter parking time limits for the purposes of maximum efficiency and safety. Commercial vehicles may park up to an hour beyond federally mandated rest periods.