Officials say Mattapan Trolley collision likely caused by operator error

BOSTON — At least 17 people were injured when two Mattapan Trolleys collided Friday evening, according to the MBTA.

Officials said 16 of those people were taken to hospitals in the area after the collision on the inbound track.

The refurbished, historic line runs between Ashmont and Mattapan.

Police and fire officials responded to two separate locations on the line.

According to the MBTA, only minor injuries were reported and the cause is still under investigation.

Shuttle buses were replacing trolleys on the line.

Jeff Gonneville, the MBTA Deputy General Manager, released a statement on the trolley collision:

"Preliminarily, the collision that occurred appears to be due to operator error. In accordance with standard procedures, the operator will remain out of service as the investigation proceeds. The MBTA is currently assessing required repairs to the two trolleys involved in the collision. Due to the limited number of unique similar vehicles, until repairs are finalized, the Mattapan Line will run with four trolleys, rather than the normal set of five. Customers should expect to wait during rush hour approximately 6 ½ minutes between trolleys rather than 5 minutes. The MBTA appreciates the patience of our customers as we work to restore regular service to the Mattapan line."

Cox Media Group