Directive 2004/52/EC of the European Parliament and of the Council of 29 April 2004 on the interoperability of electronic road toll systems in the Community (OJ L 166, 30.4.2004, p. 124).
Treoir 2004/52/CE ó Pharlaimint na hEorpa agus ón gComhairle an 29 Aibreán 2004 maidir le hidir-inoibritheacht chóras leictreonach na ndolaí bóthair sa Chomhphobal (IO L 166, 30.4.2004, lch. 124).