Runaway Red Line train may be laid to ‘operator error’

BOSTON – A runaway Red Line subway train with about 50 passengers aboard that rolled out of the Braintree station without a driver Thursday morning, may have been the result of "operator error," state officials said. After the driver got off to make an adjustment, the train traveled through several stations before the power was cut to the third rail, disabling it in North Quincy. No passengers were injured, according to the Massachusetts Bay Transportation Authority.

BOSTON – A runaway Red Line subway train with about 50 passengers aboard that rolled out of the Braintree station without a driver Thursday morning, may have been the result of "operator error," state officials said. After the driver got off to make an adjustment, the train traveled through several stations before the power was cut to the third rail, disabling it in North Quincy. No passengers were injured, according to the Massachusetts Bay Transportation Authority.…