News Delays On M4 For Tipp Commuters By Eoin O'Donoghue - 28th February 2022 643 Share FacebookTwitterPinterestWhatsAppLinkedinReddItEmailPrintCopy URL Gardai are reporting that a section of the M4 is closed. The Westbound between Junction 4 and Junction 5 is affected after an truck overturned on the motorway. Traffic is being diverted through Lucan village. Motorists should expect delays.