The state tax on gasoline goes up two cents on Sunday.

It’s the third step in the Legislature’s 2005 decision to raise the tax by nearly a dime. The fourth and final step will be another increase of nearly two cents in July of next year.

The revenue, combined with vehicle fees and a nickel gas tax increase in 2003, is paying for 432 transportation projects, costing about $13 billion in the next 14 years.

Voters in King, Pierce and Snohomish counties will be asked in November to approve additional taxes to pay for another $18 billion worth of road projects in the next 20 years.

Copyright 2007 by The Associated Press.