U.S. rail intermodal traffic rose 2.9% in the week ended May 16 compared with the same week last year as carload volume declined for the fourth consecutive week, the Association of American Railroads reported.

The Federal Highway Administration tightened its review process for highway guardrails and other roadside devices, making the first major changes since questions about the safety of a Trinity Industries Inc. system emerged in 2012.

ConocoPhillips said it plans to add more than 300 propane-powered trucks to its oil and gas fleet during the next five years.

Maersk Line, the world’s largest container shipper, reported a 57% jump in first-quarter net operating profit after tax to $714 million, missing the $783 million estimate in a survey conducted by SME Direkt.

The American Society of Transportation and Logistics and APICS, an association representing supply chain and operations management professionals, have agreed to merge.

American Fast Freight Inc., a logistics and trucking operator, announced the acquisition of Caribbean Shipping Services Inc. to expand in the U.S.-Puerto Rico ocean shipping market.

DALLAS — A Texas state lawmaker said he backs incentives that increase the use of natural gas and other alternative transportation fuels.