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In an injury crash, a drug and alcohol test is required only if the driver receives a citation and the injury is treated immediately, away from the scene of the accident.

Oil prices continued to plunge Tuesday, falling more than $3 in early trading to $118 a barrel as a tropical storm did minimal damage in the Gulf of Mexico and speculation that slower economic growth will curb demand, Bloomberg reported.

The University of Minnesota’s Center for Transportation Studies found the state’s greenhouse gas emissions reductions goal of 30% by 2025 to be feasible and said that alternative fuels, vehicle fuel efficiency and reducing vehicle miles traveled were central to reaching the goal, the Associated Press reported.

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.

Most public less-than-truckload companies’ second-quarter profits fell as fleets were pounded by record diesel prices and flagging economic demand, but some executives said they thought the overall pricing environment had improved, or at least stabilized.

The Environmental Protection Agency issued a nearly 600-page request for public comment on whether it should use existing law to regulate greenhouse gas emissions, a decision one trucking official said was a way to further delay any new regulations until after President Bush leaves office.