CHANDIGARH: The Punjab cabinet on Wednesday approved 100 percent exemption from the Motor Vehicle tax for state stage carriage buses and buses of educational institutions/school/college buses till December 31, 2020, effective from March 23, to support private transport operators amid the Covid pandemic. The cabinet gave post-facto approval to the notification issued in June to exempt these vehicles from MV tax till May 19, 2020, and also okayed notification for further extension from May 20 to December 31, 2020.