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The California Air Resources Board has proposed extending certain deadlines for truckers to replace or retrofit their vehicles, changes that the agency said would increase flexibility for businesses.

A federal appeals court has declined to rehear a legal challenge to block implementation of California’s low-carbon fuel standard aimed at lowering greenhouse-gas emissions in the transportation sector.

The Owner-Operator Independent Drivers Association filed a lawsuit in a California federal court on Dec. 6, seeking to block implementation and enforcement of the state’s Bus and Truck regulation requiring out-of-state truckers to install soot filters on their trucks.

California environmental regulators said they will give truckers operating in the state who show “good faith efforts” additional time beyond the Jan. 1 compliance deadline requiring most heavy-trucks to install particulate filters.

Six California air districts are accepting applications to fund truck replacement or engine repower projects for Classes 6-8 trucks.

The California Air Resources Board said it will conduct increased truck inspections during August.

A California judge late last week temporarily halted the state’s cap-and-trade plan aimed at reducing greenhouse gases emitted by large stationary sources.

The California Air Resources Board is considering amendments to its transport refrigeration unit regulation, including one that would extend the current seven-year in-use compliance period.

California environmental regulators have approved amendments aimed at easing the financial burden facing truckers in order to comply with the state’s greenhouse gas emissions regulations.