A motorist racked up a whopping €155,000 in unpaid M50 toll fees last year.  The unnamed driver failed to pay his fees despite passing through the barrier-free toll 1,018 times in 2014. According to the National Road Authority, more that €100 million was collected from over 43 million journeys on the road last year. However, the amount of unpaid fees is on the rise with four per cent of drivers neglecting to pay in 2014, costing the government €5 million. More than one third of unpaid fees were owed by cars with international registration plates, with 95 per cent of them from the UK. The maximum bill for a single unpaid journey is €152.60. However, according to Sean O' Neill of the NRA: "There is no cap on what a driver can owe if he makes multiple passages without paying." The toll bridge became barrier-free with the introduction of the 'eFlow' system in 2008, and is used by roughly 110,000 vehicles every day. The National Roads Authority has said they can chase debts by issuing legal proceedings and have hired a London-based debt collection agency.