Video shows 4 Red Line cars rolling down tracks with no operator

The Massachusetts Bay Transportation Authority is sharing video of runaway Red Line subway cars that rolled backward through a station without an operator on board The MBTA said the incident happened on May 30 when subway personnel at Braintree Station attempted to uncouple the last two cars from a Red Line train.One of those two Red Line cars had an air conditioning problem, so the plan was to replace the cars with another pair and then put the train back into passenger service. However, subway personnel had difficulty uncoupling the last two cars, so they decided to recouple them to the four cars they were first attached two. Those last two Red Line cars were towing the other four cars into the yard when the four cars became detached and rolled backward through Braintree Station. The MBTA said no one was injured, no cars derailed and nothing was damaged during the incident. The four-car train came to a stop on its own. A Red Line supervisor is currently on administrative suspension while the investigation continues, according to the transit authority The MBTA said it is retraining subway personnel on proper procedures for uncoupling cars in order to prevent a similar incident from happening again. According to the MBTA, the uncoupling of cars can only occur in yards unless it is an emergency situation. Even then, uncoupling can only be done by a specific classification of employees who do it regularly. MBTA managers have also reissued a rules reminder about specific practices that must be followed to ensure a train is properly secured.

The Massachusetts Bay Transportation Authority is sharing video of runaway Red Line subway cars that rolled backward through a station without an operator on board.

The MBTA said the incident happened on May 30 when subway personnel at Braintree Station attempted to uncouple the last two cars from a Red Line train.

One of those two Red Line cars had an air conditioning problem, so the plan was to replace the cars with another pair and then put the train back into passenger service.

However, subway personnel had difficulty uncoupling the last two cars, so they decided to recouple them to the four cars they were first attached two.

Those last two Red Line cars were towing the other four cars into the yard when the four cars became detached and rolled backward through Braintree Station.

The MBTA said no one was injured, no cars derailed and nothing was damaged during the incident. The four-car train came to a stop on its own.

A Red Line supervisor is currently on administrative suspension while the investigation continues, according to the transit authority.

The MBTA said it is retraining subway personnel on proper procedures for uncoupling cars in order to prevent a similar incident from happening again.

According to the MBTA, the uncoupling of cars can only occur in yards unless it is an emergency situation. Even then, uncoupling can only be done by a specific classification of employees who do it regularly.

MBTA managers have also reissued a rules reminder about specific practices that must be followed to ensure a train is properly secured.

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