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Volvo Trucks North America said Monday it is now offering Bendix heavy-duty air disc brakes on Volvo VN and VT model trucks.

The national average retail price of diesel fell 11.5 cents to $4.603 a gallon last week, the largest one-week drop in nearly two years and the second consecutive weekly decline, the Department of Energy reported.

American Trucking Associations last week asked a federal court to block emission-reduction plans by the California ports of Los Angeles and Long Beach that include concessionaire requirements the group said “unlawfully re-regulated the federally de-regulated trucking industry.”

Bridgestone Firestone North American Tire said Thursday that it will raise prices by up to 10% on all of its truck, bus, pickup and passenger tires because of higher raw materials costs and persistently high fuel prices.

The Environmental Protection Agency postponed until early August its decision on whether to grant a request from Texas to cut the national renewable fuels mandate in half, citing the huge number of comments EPA has received on the issue, which has pitted livestock growers against grain producers.

The national average price of retail diesel fell 11.5 cents to $4.603 a gallon, the Department of Energy reported Monday.

Saia Inc. on Friday reported that it earned $5.4 million, or 40 cents a share, in the second quarter, down from $10.4 million, or 72 cents, a year ago.