Federal trucking regulators got a lot of questions at a public “listening session” on highly automated commercial vehicles, but they were quick to admit they have yet to come up with the answers to many of them.

The quality of mandatory truck and bus driver physical exams administered by certified Federal Motor Carrier Safety Administration medical examiners is inconsistent, according to new analysis by the American Transportation Research Institute.

A threat by the Trump administration to dump a U.S. Securities and Exchange Commission rule requiring public companies to search their supply chains for African “conflict minerals” has drawn more than 275 written comments, many of them passionate on both sides of the issue.

The U.S. Securities and Exchange Commission and State Department are hoping to revise or eliminate an SEC rule requiring public companies to trace “conflict minerals” in their supply chains.

There has been widespread support of a Department of Transportation proposal, made public earlier this year when the agency decided to amend its drug-testing program regulation, to add four opioids to its routine drug testing of commercial motor vehicle drivers.

Democratic Gov. Jerry Brown and state Democratic legislative leaders last week were racing to meet a self-imposed deadline to approve a $52.4 billion, 10-year transportation bill to fix California’s crumbling infrastructure with revenue from hefty gasoline and diesel tax increases.

The National Highway Traffic Safety Administration has upgraded an ongoing preliminary investigation into windshield wiper motor failures on a potential 193,000 2015-16 Freightliner Cascadias.

California legislators on April 6 narrowly approved a $52.4 billion, 10-year transportation bill to fix the state’s crumbling roads and bridges with revenues from hefty gas and diesel tax increases.