A6 highway (Lithuania)
The speed limit for most of the length of A6 is default 90 km/h (outside city limits). The section from Kaunas to Jonava has been upgraded to a dual carriageway with at-grade junctions and traffic-lights. The remaining sections are roads with one lane in each direction, leading through towns like Ukmergė, Utena and Zarasai.
M6 motorway (Ireland)
The present-day M6 was constructed in five stages between 2005 and late 2009. Some of the sections which now form part of the M6 were initially opened as dual-carriageway and previously formed part of the N6, while other sections were opened as motorway.
In chronological order, the various sections opened as follows (status on opening in brackets):From 24 September 2008, motorway regulations were applied from Kinnegad to the eastern end of the Athlone bypass. The Kinnegad-Athlone scheme was signed as a motorway (and numbered "M6"). Its road markings were already appropriate to a motorway prior to the change in designation coming into effect; however, motorway regulations were not in force and the speed limit was 100 km/h until 24 September of that year.