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A plan to ban the registration of new diesel vehicles in the District of Columbia has been averted after trucking and automotive stakeholders testified the legislation would violate federal law and harm D.C.’s economy.

The U.S. Supreme Court is scheduled to announce by Jan. 13 whether it will review an appeals court decision that upheld the Federal Motor Carrier Safety Administration’s authority to operate a cross-border pilot program with Mexico.

The federal government’s truck size-and-weight study began taking shape last week as researchers outlined how they plan to assess whether larger trucks affect highway safety, pavement wear and modal shifts.

The Federal Motor Carrier Safety Administration has extended by 15 days the deadline for public comment on its proposed enhancements to the display information on the agency’s Compliance, Safety, Accountability program website.

A bill that trucking industry stakeholders have said would ban the registration of new diesel vehicles in the District of Columbia beginning in 2018 was “misinterpreted” by the industry, the city’s environmental legislative director said.

Data and methodology problems continue to undercut the accuracy and reliability of the Federal Motor Carrier Safety Administration’s Compliance, Safety, Accountability program of motor carrier measurement scores, according to a new American Trucking Associations white paper.

The Owner-Operator Independent Drivers Association filed a lawsuit in a California federal court on Dec. 6, seeking to block implementation and enforcement of the state’s Bus and Truck regulation requiring out-of-state truckers to install soot filters on their trucks.

California environmental regulators said they will give truckers operating in the state who show “good faith efforts” additional time beyond the Jan. 1 compliance deadline requiring most heavy-trucks to install particulate filters.