July 17,2008: Pollution Control Board issues the ban order.
July 18: The Calcutta High Court endorsed the PCB order and said that the notice should be treated as an order of the High Court.
December 23: Several transport operators file an appeal in the Calcutta High Court to revise the order seeking extension of the deadline.
December 24:Calcutta High Court rejects the appeal and says that order will remain valid and unchanged the Jan 1 two-stroke auto ban.
Jan.1:Six two-stroke autorickshaws were seized by the police in Calcutta on the first day of the ban imposed by Calcutta High Court.
December 30: State Government announces that from January 1, 2009 all two stroke autos will be seized by the police.
Jan.2:Autorickshaw drivers blocked vehicles on different parts of Calcutta to protest against the auto ban.Auto drivers turned violent as police seized 37 vehicles.They block roads,burnt down vehicles and prevented commuters from catching other mode of transport.At midnight opposition leader mamata banarjee started sit-in-domonstration near Chief minister’s residence after being stopped by police.
Jan.3:The Marxist Government signelled a ‘go slow’on the enforement of the auso ban,citing violence by auto drivers as a reason,seeks a extension of the deadline by three more months.
Jan.5:Calcutta High Court stuck to its earlier order on the ban on polluting autos refusing a plea by the Autorickshaw Operators’ Association for early hearing and prompting the bengal government to defer by a few days its petition for extending the deadline.