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The U.S. trade deficit widened 4.8% in May to the highest level in a year and a half, the Commerce Department said Tuesday.

WASHINGTON — The National Transportation Safety Board would like to see regulators and the trucking industry do more to address fatigue and adopt more safety technology to reduce highway crashes, Chairwoman Deborah A.P. Hersman told Transport Topics during a June 25 interview.

While Wall Street continues to express its doubts about the strength of the U.S. economic recovery that is under way, most trucking companies say that business is continuing to improve.

What does every intermodal shipment need that no one wants to really talk about? The answer — and the elephant in the room — is an intermodal chassis.

The Western Governors’ Association has urged Congress to allow interested states to create pilot programs to evaluate the benefits and costs of adding routes for longer combination vehicles.

The U.S. Environmental Protection Agency, noting “growing interest” in alternative-fuel conversion systems, recently proposed to streamline certification of aftermarket conversions that turn Class 8 diesel engines into engines that can burn diesel and natural gas.

Officials with the Port of Los Angeles and Long Beach said shipping terminals were open and operating this week during negotiations between terminal operators and a striking shipping clerks union.

The U.S. economy’s service sector expanded in June but its expansion rate fell to a four-month low, the Institute for Supply Management said Tuesday.

The California Air Resources Board has awarded $200 million in Proposition 1B funds to help cut emissions from heavy-duty trucks and other sources in the state’s four busiest trade corridors.