Eleven New Jersey Transit train engineers or conductors have been temporarily removed from duty under a program to assess fatigue-related conditions.

It's a new effort by the transit agency in the wake of the Sept. 29 rail crash in Hoboken that killed a mother standing on a platform and injured more than 100 others.

It was revealed that the engineer in the crash suffered from sleep apnea, a fatigue-inducing disorder. Federal investigators have yet to release a probable cause for the crash.

NJ Transit Executive Director Steve Santoro said Wednesday that engineers and conductors who show indications of potential fatigue symptoms will be removed until they can document they've controlled or corrected the condition.

Previously, NJ Transit allowed engineers with sleep apnea to keep working as long as they were being treated.