MBTA Green Line train that derailed, sending several riders to the hospital, was traveling 36 mph in a 10-mph zone: NTSB

The NTSB revealed new details about the derailment, including naming several factors that may have played a role, such as speed.

A Green Line trolley was going more than three times the speed limit and failed to stop for a signal before derailing Oct. 1, officials said.

The MBTA Green Line train that derailed near Lechmere Station earlier this month was traveling over three times the speed limit<a class="excerpt-read-more" href=" More

A subway train derailed in Cambridge on Tuesday, snarling the afternoon commute and resulting in injuries, according to local fire officials and the MBTA. The cause of the accident is under investigation.

The Green Line train that derailed at the beginning of October was going 36 mph in a 10 mph zone, a preliminary investigation shows.

The MBTA Green Line train that derailed near Lechmere Station earlier this month was traveling over three times the speed limit<a class="excerpt-read-more" href=" More

The train also passed through a signal requiring a stop before it hit a switch that was still in motion, according to the NTSB's preliminary report.

The train was going more than 3 times faster than it should when it failed to stop for a signal and derailed on a switch.

A preliminary report suggests that speed was likely a factor in a Green Line train derailment earlier this month, which resulted in a multiple-day closure.