Changes in some of Bus Eireann's timetables come into effect tomorrow. The principal innovation is the introduction of an hourly Expressway service on the Dublin-Galway routes. Departures from Dublin will be every hour from 0800 to 2000 daily, and departures from Galway will be every hour from 0730 to 1930 daily, says Bus Eireann. The new service will be operated by coaches with onboard toilets.