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The California Air Resources Board has approved changes that give heavy-duty diesel engine manufacturers more time to comply with “technology forcing” regulations that require advances to engine onboard diagnostics systems that monitor nitrogen oxide emissions levels and particulate matter filter and sensor malfunctions.

Construction spending fell in July for the first time in four months, the Commerce Department said Tuesday.

Margo Oge, the high-level official for the U.S. Environmental Protection Agency who has spearheaded the agency’s efforts to reduce air pollution and greenhouse gas emissions from the U.S. transportation sector, is retiring from the agency where she worked for more than three decades.

Pilot Flying J said Tuesday it has completed its deal to gain controlling interest in Maxum Petroleum.

Let me understand you correctly: If a driver runs out of time 30 minutes from the yard and is on an electronic onboard recorder, “He either spends the night 20 miles from home or, more likely, breaks the law and comes to the yard anyway.”

Transportation companies with independent contractor relationships should brace themselves for potential misclassification challenges from multiple fronts. Given the budget crises facing many states and the federal government, the interests of legislators, government agencies and unions have aligned, resulting in a coordinated effort to discourage the use of independent contractors — or to reclassify them as employees.

Orders for new trailers rose a slight 0.2% in July from a year earlier to 13,339, ACT Research reported.

The price of the service call to replace a blown truck tire on the road can run about $500, industry experts and fleet managers said, adding that the total costs can be much higher.

Officials of less-than-truckload carrier ABF Freight System said they have notified the Teamsters union they want to negotiate directly on a new labor contract next year and not as part of an industry group.