The progressive establishment of a single European railway area requires Union action in the field of the rules applicable to railways with regard to technical safety and interoperability aspects, the two being inextricably linked and both requiring a higher level of harmonisation at Union level.
Chun limistéar Eorpach aonair iarnróid a bhunú de réir a chéile, tá gá le gníomhaíocht ón Aontas i réimse na rialacha is infheidhme i leith iarnróid maidir le gnéithe teicniúla idir-inoibritheachta agus sábháilteachta, toisc dlúthbhaint a bheith acu lena chéile agus toisc go bhfuil leibhéal comhchuibhithe níos airde de dhíth ar leibhéal an Aontais ina leith.