Irish War of Independence by regulation for those areas where IRA activity was prevalent. On 10 December 1920, martial law was proclaimed in Counties Cork, Kerry, Limerick and Tipperary in Munster; in January 1921 martial law was extended to the rest of Munster in Counties Clare and Waterford, as well as Counties Kilkenny and Wexford in Leinster. It also suspended all coroners' courts because of the large number of warrants served on members of the British forces and replaced them with "military courts of enquiry". The powers of military courts-martial were extended to cover the whole population and were empowered to use the death
Cork–Limerick–Galway corridor closed for commercial traffic in 2016. Galway and Limerick are linked by the M18, and Limerick is linked to Cork by the N20. A motorway, the M20, is planned between Cork and Limerick. All three cities are connected to Dublin via motorway, Cork via the M8, Limerick via the M7 and Galway via the M6. The Western Rail Corridor links the three cities after recent major investment. The three cities are served by the Cork Suburban Rail, Limerick Suburban Rail and Galway Suburban Rail networks. Cork is served by Kent Station, Limerick by Colbert Station and Galway by Galway Station.