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Shares of railroad and auto companies were among the biggest decliners after Canadian government officials said there’s an increasing chance that U.S. President Donald Trump will give six months notice to withdraw from the NAFTA trade agreement.

Federal regulators are taking the first step toward creating a policy to guide the development of autonomous transportation beyond cars to include trucks, buses and other ground-based modes.

The chief executive of North America’s biggest auto supplier warned that overly complex NAFTA changes could result in a “lose-lose-lose” situation that leaves U.S., Mexican and Canadian manufacturers vulnerable.

The U.S. Chamber of Commerce found common cause in 2017 with President Donald Trump on tax cuts and regulatory rollbacks. This year the powerful conservative business group could part ways with the White House on two key issues: trade and immigration.

WASHINGTON — Innovations in the growth of “big data” are moving traffic research from the reactive to the predictive, a top U.S. Department of Transportation official said.

Cummins Inc. has launched its first Technical Education for Communities initiative in the United States, in conjunction with 10 Memphis, Tenn.-area education and industry partners.

WASHINGTON — Solvency and sustainability are the chief qualities state department of transportation leaders are looking for in President Donald Trump’s long-awaited infrastructure package.

WASHINGTON — Shippers traditionally hire trucking companies to move loads within 500 miles but place some of their longhaul freight on the railroads, however port authorities are beginning to successfully use intermodal service to divert truck traffic from congested container terminals.