In a step that could be termed as financially beneficial to Punjab Road Transport Corporation, the Indian Oil Corporation on Monday announced to give exemption of 25 paise per litre to the PRTC.Punjab Transport Department spokesperson said that a memorandum of understanding (MOU) has been signed in this regard by RS Nanda, Prem Kumar, PK Dass and Harvinder Singh Kainth of Indian Oil Corporation and PRTC managing director Manjit Singh Narang, RK Behal and Mohan Singh.