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Heavy-equipment maker Caterpillar Inc.’s first-quarter profit fell to $880 million, or $1.31 a share, from $1.59 billion, or $2.37, a year ago, on lower sales and production.

Gasoline’s national average pump price dropped 11 cents in the past two weeks to $3.54 a gallon, according to the latest Lundberg survey of filling stations released Sunday.

ABF Freight System said it has agreed to another extension of its contract with the Teamsters union, through May 31, as labor negotiations continue.

WASHINGTON — The Port of Los Angeles is violating a federal preemption law by imposing “binding standards of conduct” on carriers that want to access the nation’s largest port, an attorney representing American Trucking Associations told the U.S. Supreme Court last week.

U.S. heavy-duty truck sales fell 24.3% in March to 13,101 vehicles, the seventh straight year-over-year decline, WardsAuto.com reported. Truck makers and dealers blamed the slump on ongoing economic uncertainty and regulatory concerns.

Kansas City Southern’s first-quarter income rose to $104.2 million, or 94 cents a share, from $75.3 million, or 68 cents, a year ago.

Boston and its surrounding areas were in lockdown Friday as police searched for a suspect from Monday’s bombing at the Boston Marathon, news reports said.

Canadian transportation firm TransForce Inc. said its first-quarter net income dropped, on persistent softness in the economy.

American Trucking Associations recently released a report citing numerous studies showing that passenger vehicle (car) drivers are principally responsible for between 70% and 75% of fatal car-truck crashes.