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	A Piccadilly line train at Russell Square
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?????	53
?????	210.169 million (2011/12) passenger journeys
Colour on map	Dark blue
??? ????	TfL Official Website
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??????	15 December 1906
???? ?????	27 March 2008
?????	Deep Tube
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????? ?????	1973 Stock
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???? ?? ??????	45.96 ??? (73.97 ???????)
???? ???	1,435 ??? ???? ( 4 ?? 8 1 ⁄ 2 ??? ) ?????? ???
???? ?? ??? ??? ? ??? rail lines
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	Elizabeth line
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	? ; ? ; ? ;

??????? ???? ( ??????? : Piccadilly line) ????? ????? ?? ??? ???? ?????? ????? ???? ?? ???? ???? ???????? ??? ???? ??? ???? ??? ^[1]

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