Section 3(14) in Technical Specifications of HVAC Ordinary Bus
14.0Service doors.- 14.1 One service door (To be used as both Entrance and Exit) in minimum 900 mm wide aperture (without flaps) to be fitted at front of the bus or two separate doors (one at front for exit and another at rear for entrance) with minimum 750 mm wide aperture must be as per provisions of the Bus Code. The door system shall be electropneumatically controlled by the driver and/or the conductor with internal and external emergency open controls. In the event of an emergency, it shall be possible to open the door manually from inside the bus by using a force no more than about 10 Kg after actuating and unlocking device. The unlocking devices shall be clearly marked as an emergency device and shall require two distinct actions to actuate. Door, door hinges and locks shall comply with safety requirements as per Indian/International standards. The closing and opening time of the door should be in the range of 4 seconds. There shall be maximum opening area in longitudinally and vertically directions in fully open condition. The door hinges and brackets shall be maintenance free. A pilot lamp on the driver's dashboard shall be provided to warn that the door is `Open' or not fully closed.
