High above the Balfour interchange on State Route 4 in Brentwood, Calif., a drone buzzes, its sensors keeping a close watch on the volumes of earth being moved to make way for a new highway bypass.

State and local law enforcement officers from five Southeastern states are out in large numbers in a special enforcement operation primarily looking for trucks and cars speeding on highways and interstates.

Truckers and other transportation stakeholders last week voiced a variety of regulatory, infrastructure and funding concerns to the House Highways and Transit Subcommittee.