Texas officials have reconsidered their decision to withhold details of how many trains carry at least 1 million gallons of crude oil across the state each week.
The Texas Attorney General's office decided last week that the records BNSF and Kansas City Southern railroads gave the state should be disclosed.
Previously, the Texas Department of Public Safety refused to share those records when The Associated Press and others requested them.
It was not immediately clear Monday morning how quickly Texas officials will produce the records.
Last spring, federal transportation officials ordered the railroads to begin notifying states about trains carrying at least 1 million gallons of crude oil.
The crude oil shipments are being scrutinized because of several fiery derailments, including a 2013 incident in Canada when 47 people died.