Grade (slope): Revision history

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11 January 2015

23 February 2014

26 January 2014

  • curprev 17:2317:23, 26 January 2014en>SJ Morg 11,304 bytes +11,304 →‎Roads: add photo of trolleybus on steep grade; trolleybuses are known for their ability to climb steeper grades than almost any other type of motorized self-propelled vehicle

1 September 2012