Platform height is ideally standardized across all stations the train serves. Platform height determines the level entry height for wheeled objects, such as luggage, strollers, wheelchairs and bicycles. There are four important height measurements above the railhead: platform height, traditional floor height, downstairs floor height and upstairs floor height. This is a traditional single floor car "with a second story" design which, when using a low platform, requires steps up to a traditional floor height and then internal stairs up to the upper floor. Occasionally a third, very tall "two floors over-wheel" design is used. For low train station platforms, a "two-floor" design with level entry onto the lower floor is used. For cost and safety, this design also minimizes car height ( loading gauge) and lowers the centre of gravity.ĭepending on train station platform heights, three designs can be used for entry – high platforms require use of a "split level" car design, where the doors are located on a middle level, with access into the upper or lower level branching off – with stairs or ramps going both up and down (sometimes this configuration includes a section of seating at the middle level in the entry section, with double levels only in part of the lengths of the car). Such a design will fit under more bridges, tunnels and power wires ( structure gauge). The double-deck design usually includes lowering the bottom floor to below the top level of the wheels, closer to the rails, and then adding an upper floor above. In 1964, the four experimental double-deck power cars entered service in Sydney, Australia, enabling the first fully double-deck Electric Multiple Unit passenger train in the world. These were successful, and led to the Atchison, Topeka and Santa Fe Railway introducing long-distance Hi-Level cars on Chicago– Los Angeles El Capitan streamliner in 1954. The Chicago, Burlington and Quincy Railroad placed bilevel cars in commuter service in the Chicago area in 1950. Vidard's carriages had a total height of 13 feet 8 inches (4.17 m) with the head height in the lower part of the carriage only 5 feet 5 inches (1.65 m) the carriages had a capacity of 80 persons (third class) in a 2 axle vehicle of 13 tons fully loaded.
DOUBLE DECKER TRAIN FULL
Vidard introduced two-storied carriages on the Chemins de fer de l'Est, with a full body, windows, and doors the same design lowered the floor of the lower storey to keep the center of gravity low.
In France several hundred voitures à impériale with seats on the roof were in use by the Chemins de fer de l'Ouest, Chemins de fer de l'Est and Chemins de fer du Nord by 1870, having been in use for over 2 decades the design was open at the sides with a light roof or awning covering the seats. ĭouble deck carriages date to at least as early as the second half of the 19th century. In some countries such as the UK new lines are built to a higher than the existing structure gauge to allow the use of double-deck trains in future. ĭouble deck cars may not be usable in countries or on older railway systems with low loading gauge, most notably the majority of the British rail network. The increased dwell time makes them most popular on long-distance routes which make fewer stops (and may be popular with passengers for offering a better view). However, a double deck train may take longer to exchange passengers at each station, since more people will enter and exit from each car. A double deck car may carry up to about twice as many as a normal car, if structure and loading gauges permit, without requiring double the weight to pull or material to build. The use of double-decker carriages, where feasible, can resolve capacity problems on a railway, avoiding other options which have an associated infrastructure cost such as longer trains (which require longer station platforms), more trains per hour (which the signalling or safety requirements may not allow) or adding extra tracks besides the existing line.ĭouble deck trains are claimed to be more energy efficient, and may have a lower operating cost per passenger. Czech Railways Class Bdmteeo294 in Kolín, Czech Republic.Ī bilevel car ( American English) or double-decker coach ( British English and Canadian English) is a type of rail car that has two levels of passenger accommodation, as opposed to one, increasing passenger capacity (in example cases of up to 57% per car).
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