Vehicles required to be registered with the Department of Licensing (DOL) must display license plates or decals assigned by the DOL.
License plates must be:
The Washington State Patrol may grant exceptions to the above license plate display requirements if the body construction of the vehicle makes compliance impossible.
Provided that the requirements specified below are met, the display of a single license plate properly attached to a vehicle that has two license plates properly attached may be temporarily obstructed by one or more of the following devices by the cargo the device is carrying:
In order for the above license plate visibility exception to apply, the device must be installed according to manufacturer specifications or generally accepted installation practices, and the device or cargo the device is carrying must not prevent the license plate from being read from one or more accessible viewing angles when the vehicle is parked, except if the device is a trailer that meets trailer license plate requirements.