Experts don’t know how much gas prices may rise from the revised California climate program, which tightens standards and gives incentives for low-carbon fuels. The board ordered an annual review of the cost impacts.

California air quality regulators late Friday approved tougher rules to encourage use of lower-carbon fuels, overriding objections that the action would lead to higher gasoline prices for motorists.On an 12-to-2 vote,

The California Air Resources Board on Friday approved stricter carbon-intensity standards on fuels to help meet the state’s climate targets, even though questions have been raised that doing so may lead to a spike in gasoline prices.