Federal regulators and shippers are questioning Union Pacific’s decision to temporarily limit some businesses’ shipments as part of its effort to clear up congestion across the railroad.

Railroad engineers accepted their deal with the railroads that will deliver 24% raises but conductors rejected the contract, casting more doubt on whether the industry will be able to resolve the labor dispute before December’s deadline.

The Environmental Protection Agency said Nov. 9 it will consider adopting stricter rules on locomotive emissions in response to concerns raised by California regulators.

A second railroad union rejected its deal with the major U.S. freight railroads on Oct. 26, reflecting workers’ increasing frustration with the lack of paid sick time in the industry and adding to concerns about the possibility of a strike next month that could cripple the economy.

CSX Corp. delivered 15% more profit in the third quarter as it handled 2% more freight and worked to eliminate the delays shippers have been complaining about for months.

OMAHA, Neb. — The U.S.’s third-largest railroad union rejected a deal with employers Oct. 10, renewing the possibility of a strike that could cripple the economy. Both sides will return to the bargaining table before that happens.

OMAHA, Neb. — A union that rejected its deal with the nation’s freight railroads earlier this month now has a new tentative agreement, but officials cautioned that the contract dispute won’t be fully settled until all 12 rail unions approve their agreements this fall.

OMAHA, Neb. — A last-minute deal prevented a railroad strike for now, but many rail workers remain unhappy with working conditions, including some who protested outside their workplaces Sept. 21 ahead of votes to approve the new contracts.

OMAHA, Neb. — The heads of the nation’s two largest rail unions said Sept. 11 that the freight railroads’ move to begin delaying some shipments ahead of this week’s looming strike deadline is only an attempt to get shippers to increase the pressure on Congress to intervene and block a work stoppage by imposing a contract on workers.

OMAHA, Neb. — Three of the 12 unions negotiating with the nation’s biggest freight railroads have reached a tentative deal that will deliver 24% pay raises, in line with what a special presidential panel of arbitrators recommended earlier this month to resolve the stalemate before a strike could happen.