Important Notice for Customers of Car Rental Companies Regarding Tolls on the M50. A Barrier-Free Tolling system operates on the Dublin M50 Motorway. A Barrier-Free Tolling system operates on the Dublin M50 Motorway. Drivers of all vehicles using the section of the M50 between Junction 6 (N3 Blanchardstown) and Junction 7 (N4 Lucan) are liable to pay a toll. There is no toll barrier or tolling booth and therefore there is no cash payment facility available at the tolling point on the M50. The car rental company has established account facilities with the toll operator, therefore the toll account will be automatically charged to a car rental companys’ account for each toll incurred. Schedule of toll charges for pre-registered accounts: Cars: 2.50 Commercial vehicles and passenger vehicles with seating for more than 8 people: Between 3.30 and 5.60 The total amount of tolls plus any administration fee will be recharged by the car rental company to its customer. Please note cash payment facilities are available at tolling booths on all other toll roads in Ireland.