California voters will decide in November whether or not to get rid of higher gas taxes and registration fees, that were approved last year.
Secretary of State Alex Padilla said Monday that initiative supporters collected enough valid signatures to qualify for the ballot.
The gas tax initiative is a central part of the Republican strategy to hold onto contested legislative and Congressional seats.
The GOP hopes opposition to the gas tax will make inroads with moderate voters and encourage conservatives to cast a ballot.
Gov. Jerry Brown and other supporters say $5 billion a year in revenue is needed to maintain roads and bridges.