Slán Abhaile
From Infogalactic: the planetary knowledge core
"Slán abhaile" is an Irish phrase used to bid goodbye to someone who is travelling home. A literal translation is 'Safe Home', which is used in the same way in Hiberno-English.[1] Slán ("safe") is used in many Irish-language farewell formulas; abhaile means "homeward" (roughly pronounced 'slawn awallya')
In Ireland, "slán abhaile" often appears on signs on roads leaving a town or village.[2] It is on official signs encouraging drivers to drive safely from town to town.
In Northern Ireland, the phrase has also appeared on many Irish Republican murals, as a farewell to the British Armed Forces, the ending of whose presence was a major goal of Irish Republicanism.[3]