There have been calls (by both Republic of Ireland and Northern Ireland political parties) to upgrade the whole Dublin-Derry route to dual carriageway, including the A5 in Northern Ireland.
Currently the National Roads Authority (NRA) encourages hauliers heading north to Derry to use the M1 as far as the N33 road to Ardee, avoiding the dangerous sections of the parallel N2 in the environs of Slane, Collon and Ardee.