MBTA Inexperienced Line prepare that derailed was touring 36 mph in a 10-mph zone: NTSB

The Inexperienced Line prepare that derailed close to Lechmere Station, sending a number of riders to the hospital earlier this month, was touring 36 mph in a 10-mph zone, in keeping with federal investigators.

The Nationwide Transportation Security Board on Wednesday launched its preliminary report of the continuing investigation into the Oct. 1 derailment.

About 50 passengers and a couple of crewmembers have been on board because the prepare left Lechmere Station in Cambridge and headed east alongside the MBTA’s Inexperienced Line. Lower than a minute later, the prepare derailed — sending seven riders to the hospital with non-life-threatening accidents.

“The train entered a 10-mph zone at 36 mph, passed through a double red signal (which requires a stop) west of the Red Bridge interlocking, and reached a switch that was still moving to direct the train into the diverging track as required by its route,” reads the NTSB report.

“When the train passed over the switch, the lead truck of its leading railcar continued straight, while the next two trucks of that same railcar took the diverging track and then derailed,” the report continues.

Visibility situations on the time of the accident have been clear. The climate was about 62 levels, with no precipitation.

​Whereas on scene, NTSB investigators accomplished interviews; reviewed knowledge from locomotive occasion recorders, the sign system, and safety cameras; and inspected railroad tools and observe situations.

“The NTSB’s investigation is ongoing,” the report reads. “Future investigative activity will focus on speed rules compliance and internal and external oversight.”