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A Southern California-based federal drug task force rounded up more than 57 members of three alleged Mexican drug organizations accused of smuggling cocaine, methamphetamine and heroin into the U.S. by hiding the drugs in PVC pipes concealed in tractor-trailer axles, according to federal prosecutors.

Motorists in California drove 84.7 billion miles in 2011, making it the busiest state that year in terms of vehicle mileage, the Federal Highway Administration said Monday.

The federal government is overhauling its system for trucking and bus company registration, in a move that will combine 16 forms that companies must complete into one Web-based electronic form, regulators said Thursday.

An index of leading economic indicators rose 0.6% in July, the most in three months, the New York-based Conference Board said Thursday.

The U.S. National Transportation Safety Board is “going to have to let some things go,” if budget cuts are not restored, Chairman Deborah Hersman told Bloomberg Television.

A trucking industry defense attorney warned that plaintiffs’ attorneys will attempt to get Compliance, Safety, Accountability data into evidence to bolster accident claims that a carrier is unsafe.

Federal regulators withdrew some portions of a rule they tried to finalize in June that would have made minor technical amendments to the upcoming greenhouse-gas emissions and fuel-efficiency standards for heavy trucks.