New Delhi: Several financial irregularities pertaining to toll operations managed by the National Highways Authority of India (NHAI) have been flagged by the Comptroller and Auditor General (CAG), wherein it has been revealed that road users had borne undue financial burden of Rs 180.44 crore owing to non-compliance with prescribed fee rules, reported New Indian Express.In its report tabled in the Parliament on Monday (March 30), the CAG found that while taking over the toll collection after the expiry of a concession period, the NHAI failed to reduce toll charges to 40% which is compulsory under the National Highway Fee Rules, 2008. As a result, road users had to deal with an undue financial burden of Rs 180.44 crore.The New Indian Express report added that during the review of toll operations of NHAI in Gujarat and Maharashtra, the auditor had flagged how owing to ineffective implementation of the directives of the Ministry of Road Transport & Highways and policy circulars of NHAI, there was a loss of of revenue of Rs 9.60 crore.The report tabled in the Parliament also added that the delay in making settlement payments to a concessionaire resulted in loss of toll revenue Rs 9.68 crore to NHAI. The auditor also said that due to the absence of a uniform system, data-migration challenges and operational inefficiencies have arisen and urged the NHAI to address the gap on priority.The suggestions included standardising the Toll Management System (TMS) used by various system integrators to deal with data-migration challenges.