Road Traffic (Special Speed Limits) National Roads County Of Monaghan Bye Laws (No.1) 2019 (PDF)01. N2 Carrickmacross North02. N2 Carrickmacross South03. N2 Castleblayney04. Monaghan North05. Monaghan South06. N2 Corracrin07. N2 Emyvale08. N12 Monaghan09. N12 Monaghan10. N12 Monaghan11. N53 Castleblayney12. N54 Monaghan13. N54 Smithborough14. N54 Stonebridge15. N54 Clones