Authorizes a regional transit authority to contract with the department of licensing for the collection of a motor vehicle excise tax only if the tax is based solely on the vehicle valuation method mentioned below.

Requires the value of a motor vehicle to be based on base model Kelly blue book values or national automobile dealers association values, whichever is lower.

Specifies that RCW 82.44.035 (section 3 of this act) applies only to the motor vehicle excise tax imposed by a regional transit authority in RCW 81.104.160(1)(a)(i) (section 2(1)(a)(i) of this act).