SB5457 – Extends tax exemptions for commuter ride sharing vehicles to any carpool or vanpool transporting at least three people, including the driver.
Prime Sponsor – Senator Saldaña (D; 37th District; Seattle)
Current status – Referred to the Senate Committee on Transportation; had a hearing on February 18th.
Next step would be – Dead.
Legislative tracking page for the bill.
This is a companion bill to HB1514.

Summary –Summary –
Currently, the Commute Trip Reduction Incentives Act provides tax exemptions for vehicles that will be used for at least three years in commuter car pools or van pools making one round trip a day. They’re exempted from the State sales and use taxes, and from the motor vehicle excise tax. (It also exempts them from the regulations applying to drivers or owners of motor vehicles operated for hire, common carriers and public transit carriers, and protects those promoting ride sharing from any civil suits arising from the maintenance or operation of the vehicles.)

The bill expands the scope of these provisions by dropping the references to commuting, and redefining ridesharing as any “carpool or vanpool arrangement whereby one or more groups” of at least three people and not more than fifteen, including the driver, are transported. (I don’t know if this definition would include operations like Uber Pool or not.)