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Truckload carrier Knight Transportation’s fourth-quarter profit fell 18.6% to $13.1 million, or 16 cents a share, compared with $16.1 million, or 19 cents, a year ago.

DALLAS — Trucking industry officials said that while they needed more flexibility to take rest breaks, the current hours-of-service rules were working.

California environmental regulators are considering several options to delay some requirements of the state’s diesel emissions regulation to provide “short-term relief” for truckers feeling the effects of the recession.

Aggressive fuel economy research and development funded by the federal government will reduce fuel consumption of long-haul trucks by 30%, Energy Secretary Steven Chu told a Senate committee Thursday.

States are continuing to crack down on texting and driving, with 23 debating legislation to ban the practice that 19 states already prohibit, USA Today reported Monday.

Trucking industry officials have filed comments opposing the California Air Resources Board’s plan to initiate a statewide cap-and-trade program to reduce greenhouse gas emissions.

American Trucking Associations said last week it filed a lawsuit against the Federal Motor Carrier Safety Administration to force the agency to issue an overdue regulation covering the documents and other materials fleets need to maintain to verify drivers’ logbooks.

ARLINGTON, Va. — Backers of the current driver hours-of-service rule far outnumbered opponents in the first of four scheduled public hearings held by the Federal Motor Carrier Safety Administration as it reviews the much-contested regulation.

The rate of fatalities in accidents involving trucks fell 12.3% in 2008 from the previous year — the largest year-to-year drop on record — to its lowest level on record, according to an American Trucking Associations analysis of Department of Transportation data.