A worker was killed after being hit by a remote-controlled train in Ohio. Now, unions are calling for change.

• A railroad worker is dead after being hit by a remote-controlled train on a CSX railyard in Ohio.
• This is the third time a railway worker has been killed in an incident involving a remote-controlled train.

A railroad worker died over the weekend after he was struck by a remote-controlled train in a CSX railyard in Ohio, raising concerns among unions about such technology.

The death highlights the need for an in-depth review of the use of remote-controlled locomotives, the Transportation Communications Union and Brotherhood of Railway Carmen said in a news release Sunday. Every major railroad has used such locomotives inside, and increasingly outside of, railyards across the country for years.

The National Transportation Safety Board is investigating the death, which happened shortly before 4 a.m. Sunday in Walbridge, Ohio. Spokesperson Keith Holloway said the worker was struck and fatally injured when he walked into the path of a moving locomotive that was being operated by remote control.

Fred Anderson is the third carman killed in an incident involving a remote-controlled locomotive, the unions said.

"Enough is enough. A full-scale review of the use and practices around remote-control locomotives is long overdue. CSX — and every railroad — must evaluate their use of these supposed technological advancements to ensure they are actually making our members safer, and not merely replacing people to continue lining the pockets of Wall Street," Transportation Communications Union National President Artie Maratea said in the news release.

CSX officials at the railroad's headquarters in Jacksonville, Florida, confirmed the accident but declined to discuss the details of Anderson's death because it is still being investigated.

"CSX mourns the loss of this employee and our thoughts are with his family and loved ones. The safety of our railroaders is our highest priority. CSX is working with officials to determine exactly what happened," spokesperson Sheriee Bowman said.

The Federal Railroad Administration has approved the use of remote-controlled locomotives since 2005. They are primarily used inside railyards to help assemble trains. Regulators issued guidelines for railroads back then calling for precautions, including ensuring the trains don't operate at speeds above 15 mph, but there aren't detailed regulations on exactly how they can be used.

Typically, a railroad worker stationed on the ground near a train controls its movements with a remote, although sometimes that worker rides aboard the train while it is moving.

Railroad safety has been a key concern nationwide this year ever since a Norfolk Southern train derailed and caught fire in eastern Ohio in February. That crash prompted evacuations, lingering health concerns, a massive ongoing cleanup and calls for reforms.

CSX is one of the nation's largest railroads, operating trains in 23 Eastern states and two Canadian provinces.