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Safeguards for Passengers Waiting on Platforms --- Platform Screen Doors and Track Intrusion Detection System

Introduction to the platform doors.
Introduction to the platform doors.
Platform doors in operation.
Platform doors in operation.

We have been committed to the the safety and security of our passengers since the beginning of the Taipei MRT. Eliminating accidents is our priority and we have decided to install Platform Screen Doors (PSD) comprehensively for the following reasons:

Public interests: Passengers or their belongings falling on to the tracks, or any other accidents of such nature will impact the operation of MRT trains, which, in turn, falls back to cause road congestion and other problems, resulting in increased transportation cost and damage of social interests. PSD isolate the platforms from the tracks, thus preventing accidents and track intrusions, protecting the safety of passengers waiting on the platform as well as that of the trains.

Worldwide trend: The installation of PSD on new metro lines is a worldwide trend. Major Asian cities such as Hong Kong, Singapore and Tokyo all have PSD on their metro systems. A survey of the Paris Metro showed that, the installation of PSD on Line 13 effectively prevents items and passengers falling on to the tracks or through the platform gaps, reducing the number of delays caused by passenger accidents by 69%.

PSD not only protect passengers and trains, they also guide trains to stop at the correct position to the PSD, before both train and PSD open automatically. The sensors on the PSD detect obstruction when closing, and will automatically stop and reopen to ensure passenger safety. The system only releases the train for departure if the PSD are completely shut. The instructions on the PSD allow passengers to manually open them in case of emergency. In addition, the EMU drivers will visually confirm that all doors are closed before departure.

There are half-height and full-height PSD, both of which meet our safety requirements. The installation has to correspond with the structure of the station, air conditioning, fire equipment, tunnel ventilation and other equipment integration issues. Stations fitted with full-height PSD had them incorporated from the design stage, such as Wenhu, Luzhou/Xinzhuang, Xinyi and Songshan lines, Taipei Nangang Exhibition Center Station, as well as future lines to come. Lines where PSD were not included in the early designs are fitted with half-height doors in consideration of construction time, cost and user impact; including Tamsui, Xindian, Zhonghe, Nangang (except Nangang Exhibition Center Station), Banqiao and Tucheng lines, 58 stations in total.

It is a great challenge to install PSD on operating stations. There are only 3.5 hours at night during which construction may take place, and the works must not disrupt regular service the following day. The phased installation project truly demonstrates our determination to passenger safety and the reliability of the MRT system.

During the first stage, we focused on Taipei Main Station (Tamsui and Nangang lines) and Zhongxiao Fuxing Station (Nangang Line), which have the highest passenger flow. The installation period was from November 28, 2005 to December 1, 2006. The height of the door is 1.45m and the width is 1.8m.

The second stage of the installations started on September 4, 2009, and were completed on October 1, 2010 for platforms at Yuanshan, Sun Yat-Sen Memorial Hall and Taipei City Hall Stations. These stations are frequently used for major events and therefor often face crowd control issues. We have taken on valuable suggestions from our passengers, such as leaving electronic bulletins above the train windows unobstructed and reducing the height of the doors to 1.4 meters. This allowed the doors to be better integrated with the design of the station. The width of the door has been increased to 2.1 meters for ease of access.

Stage three is targeted at a total of 15 high passagner flow and transfer stations, i.e. Zhongxiao Xinsheng, Minquan W. Rd., Ximen, Guting, Chiang Kai-shek Memorial Hall, Longshan Temple, Zhongxiao Dunhua, Jiantan, Dingxi, Xinpu, Gongguan, Tamsui, Zhongshan, Nangang and Banqiao stations. The project started in 2013 and is planned for staged completion by the end of 2014.

The fourth stage, which covers the remaining 37 stations, is currently in the design stage. Work is planned to start in 2015 and to be completed in 2018, at which point all MRT stations will have been fitted with PSD.

MRT stations which do not yet have PSD installed are already equipped with a Track Intrusion Detection System. This system was developed in-house by the TRTC and is the first of its kind in the world. By using infrared detectors and Laser Measurement Sensors, it is able to detect movement on the tracks along the platforms, around platform end doors, at the gap between the trains and platform end doors, and beyond the clearing line on the platform. It gives alert to the control center when a passenger moves beyond the designated area on the platform, upon which the surveillance system will lock onto the area and station staff will attend to the scene immediately. In the track area, a traffic light at 150m from the platform end door will turn red, warning drivers to slow down and be alert of the situation.

 
Yuanshan Station
Yuanshan Station
Yuanshan Station
Yuanshan Station
Taipei City Hall Station
Taipei City Hall Station
Drilling.
Drilling.
Positioning and measuring.
Positioning and measuring.
Installation of platform doors.
Installation of platform doors.
The Track Intrusion Detection System for a surface level station.
The Track Intrusion Detection System for a surface level station.
Detecting areas of the Track Intrusion Detection System.
Detecting areas of the Track Intrusion Detection System.
Adjustable camera.
Speed dome camera.

  • Hit: 23150
  • Updated: 2014-7-24 15:18
  • Reviewed: 2014-7-24 15:17

  • Source: Taipei Rapid Transit Corporation