multiple conflicting English station names caused by inconsistent conversions, even for stations built after enactment of the new naming policy. The information brochures (臺北市大眾捷運系統捷運站轉乘公車資訊手冊) printed in September 2004 still used Wade–Giles romanizations. To accommodate increasing passenger numbers, all metro stations have replaced turnstiles with speed gates since 2007, and single-journey magnetic cards have been replaced by RFID tokens. TRTS provides free mobile phone connections in all stations, trains, and tunnels and also provides WiFi WLAN connections at several station hotspots. The world's first WiMAX-service metro trains were introduced on the in 2007, allowing passengers to access the internet and watch live broadcasts. Several stations are also equipped with mobile charging stations. Platforms Most underground stations have island platform configurations while a few have side platform configurations, and vice versa for elevated/at-grade stations (a few stations have island platform configurations but the majority of elevated/at-grade stations have side platform configurations). All high-capacity metro stations have a long platform to accommodate all six train cars on a typical metro train (with the exception of ). The width of the platform and concourse depends on the volume of transit; the largest stations include Taipei Main Station, , and . Some other transfer stations, including , , and , also have wide platforms. Each station is equipped with LED displays and LCD TVs both in the concourse and on the platforms which display the time of arrival of the next train. At all stations, red lights on or above automatic platform gates at stations flash prior to a train arrival to alert passengers. As of September 2018, all stations have automatic platform gates. However, before 2018, all the stations on the and most stations on the , as well as a few stations on other lines, were equipped with platform screen doors. High-traffic stations, including Taipei Main Station, , and , had platform gates to prevent passengers and other objects from falling onto the rails. All lines and extensions currently under construction will be equipped with platform screen doors. A Track Intrusion Detection System has also been installed to improve passenger safety at stations without platform doors. The system uses infrared and radio detectors to monitor unusual movement in the track area. Signalling When the Muzha Line first opened in 1996, the line was initially equipped with automatic train operation (ATO) and automatic train control (ATC), which in turn comprised automatic train protection (ATP)