Use “warm button”
Since November, 2 doors in all buses and trams (equipped with a special system) should be opened by use of so called “warm button” during the whole day.
Such a solution prevents an unnecessary cooling inside a vehicle while waiting at bus stops. When there are few passengers waiting at the bus stop, a driver or a motorman does not have to open all doors. Passengers open doors themselves by pushing a button placed outside a vehicle right by the door. Such buttons are also placed inside a vehicle. They are on railings next to doors. All buses and trams equipped with so called “warm buttons” have special stickers on doors.
In vehicles which do not have such a system, doors are still open be drivers.