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WASHINGTON — Trucking executives from Wisconsin, Iowa, Minnesota and Ohio asked members of their congressional delegation here April 9 to help roll back provisions of a Federal Motor Carrier Safety Administration rule that imposes limits on truckers’ work schedules.

Federal regulators should develop a separate standard for natural gas-powered vehicles when they finalize the second phase of the government’s emissions reduction and fuel-efficiency standards for medium- and heavy-duty trucks, according to a new report by the National Research Council of the National Academy of Sciences.

By now, you’re well aware of President Obama’s announcement that he will direct the Environmental Protection Agency and the Department of Transportation to set the next — i.e., the post-2018 — round of medium- and heavy-truck fuel economy and emissions standards.

Whiting Door Manufacturing Corp. has licensed technology to produce lightweight steel panels for trailer side walls and doors, a move that expands the company’s truck business beyond doors for the first time.

After much anticipation, on March 13 the Federal Motor Carrier Safety Administration released its proposal that interstate truck drivers be required to use electronic logging devices.

Reaction to President Obama’s call for tighter carbon dioxide emissions rules for trucks poured in quickly with the first wave of comment generally offering approval, although there were also calls for caution, including from American Trucking Associations.

Mexico’s main trucking association has filed a $30 billion arbitration action against the United States over the country’s refusal to fully allow Mexican carriers to operate within U.S. boundaries.

Volkswagen’s supervisory board will focus on the company’s truck brands and its efforts to overtake Daimler AG as the world’s largest truck maker at its next meeting, according to Reuters.

Recent moves by President Obama and congressional leaders to expand job-training programs are raising hopes the government will do more to help individuals learn to be truck drivers, industry officials said.