With an aim to get rid of high-polluting vehicles, the transport ministry has proposed to double the rebate up to 50 per cent in one-time tax on purchase of new vehicles after scrapping those with BS-II and earlier emission standards. With an aim to get rid of high-polluting vehicles, the transport ministry has proposed to double the rebate up to 50 per cent in one-time tax on purchase of new vehicles after scrapping those with BS-II and earlier emission standards. Zee News :Business