|RTA Excise Tax||$2.00|
|Vehicle Weight Fee||$10.00|
The Vehicle Weight Fee is new to me:
An annual fee charged based on the empty weight of your vehicle. Motor homes are subject to an annual weight fee of $75.
I found a PDF with a vehicle weight fee chart. My car's curb weight is 2768 pounds, less than a Prius! (2004 or newer.) Most SUVs run in the two to three ton range, too bad they only get charged twice as much as me.
(Washington vehicle use classes can be found in this PDF.)