Blue Line Door Operation Sign, MBTA Station

A platform sign explaining customer-operated doors on Blue Line trains of the Massachusetts Bay Transportation Authority. Unlike many rapid-transit systems where doors open automatically at every stop, portions of the MBTA Blue Line fleet require passengers to press a button to open the doors once the train is stopped. This practice dates back to older car designs and cold-weather operating considerations, helping retain heat in winter and reduce unnecessary door cycling.

Photo taken in April 2025.