Metro Train In Montreal Canada

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• published: 17 Apr 2013
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Train operation Switches use conventional points on the standard gauge track to guide trains. Rubber tires, rolling on concrete rollways, keep supporting the full weight of the trains as they go through switches. Guideways are provided in order to ensure there are no gaps in the electrical power supply. All lines but the Yellow Line are equipped with automatic train control. Generally, the train operator does the closing of doors, and starts the DA (Départ automatique, automatic departure) Then the train drives itself. The train operator can also drive the train manually at his or her discretion. Signalling is effected through coded pulses sent through the rails. Coded speed orders and station stop positions transmitted through track beacons are captured by beacon readers mounted under the driver cabs. The information sent to the train's electronic modules conveys speed information, and it is up to the train automatic control system computer to conform to the imposed speed. Additionally, the train computer can receive energy-saving instructions from track beacons, providing the train with four different economical coasting modes, plus one mode for maximum performance. In case of manual control, track speed is displayed on the cab speedometer indicating the maximum permissible speed. The wayside signals consist of point (switch/turnout) position indicators in proximity to switches and inter-station signalling placed at each station stop. Trains often reach their maximum speed of 70--72 km/h (43.5--44.7 mph) in 16 to 26 seconds depending on grade and load. Trains are programmed to stop at certain station positions with a precise odometer (accurate to plus or minus five centimetres). They receive their braking program and station stop positions orders (one-third, two-thirds, or end of station) from track beacons prior to entering the station, with additional beacons in the station for ensuring stop precision. The last beacon is positioned at precisely 12 turns of wheels from the end of the platform, which help improve the overall precision of the system. Trains draw current from two sets of 750-volt direct current guide bar/third rails on either side of each motor car. Nine-car trains draw large currents of up to 6,000 amperes[citation needed], requiring that both models of rolling-stock have calibrated traction motor control systems to prevent power surges, arcing and breaker tripping. Both models have electrical braking (using motors) to assist primary friction braking, reducing the need to replace the brake pads. Two models of train are used on the Metro. The Canadian Vickers-built MR-63, delivered for the metro's opening in 1966, is used on the Green and Yellow Lines and the Bombardier-built MR-73 is used on the Orange and Blue lines Brought To You By Maneesh Kaushik