More than 3,000 Garda checkpoints will be mounted over the bank holiday weekend in addition to speed checks. Gardai say the operation is aimed at preventing deaths and injuries on the roads. Nine people died and 151 were injured over last year's October bank holiday weekend and gardai say they hope to reduce the figures this year.
Motorists are advised to drive carefully within speed limits and to wear seat belts at all times.
The National Safety Council is also appealing to people to take care on the roads, especially as winter time begins this weekend, which means it will become darker earlier.
The Dublin City Marathon will cause traffic disruption on Bank Holiday Monday, but its early start means the congestion should be cleared by late afternoon.
The route is: Westmoreland Street/Merrion Square North; Merrion Road; Nutley Lane; Stillorgan Road; Clonskeagh Road; Waterloo Road; Leeson Street; the Coombe; South Circular Road; Harold's Cross Road; Kimmage Road Lower; Kimmage Road West; Walkinstown Road; Davitt Road; Conynghan Road; Queen Street; Middle Abbey Street and O'Connell Street.
The PMPA Ideal Homes Exhibition continues in the RDS, Simmonscourt, tomorrow, Sunday and Monday from 10 a.m. to 6.30 p.m. The exhibition will feature The Irish Times Interior Design Forum, a Science and Technology Pavilion and a Jif Dream House.
Ongoing celebrations to mark the centenary of the first formal ceil i in 1897 culminate in a national weekend of ceili dancing in St Patrick's College, Maynooth. Activities include ceili dancing workshops for beginners and improvers, a course for dancers who want to teach and a lecture on the history of ceili dancing.
The Original Culchie Festival in Mountbellew, Co Galway, continues until tomorrow. Twenty-four competitors from Ireland and Britain will compete for the title.
The 20th annual Cork Jazz Festival will attract more than 1,000 musicians from 26 countries. The festival, now the biggest in European jazz calendar, includes Johnny Griffin and his quintet, the Irish Jazz Orchestra, saxophonist Jack McLean, pianist Ceder Walton's trio, hammond organ player Joey De Francesco and pianist Benny Green.
The Fringe Jazz Festival in Kinsale, Co Cork, runs until Monday in venues around the town. Performers include the Cork City Jazz Band, Ian Briggs and the Supervampers and Esmond Selwyn.
An arts and crafts fair will be held on Sunday and Monday in Castleconnell, Co Limerick.
The Beamish Ceol Agus Craic festival runs until Monday with bands performing at venues in Greystones, Delgany and Killincarrig, Co Wicklow.
The Cooley-Collins Traditional Music Festival runs in Gort, Co Galway, until Monday in venues throughout the town.
The River Spectacle, a Fire and Water Art installation on the Liffey, will take place between Capel Street Bridge and the Ha'penny Bridge, on Sunday. Entertainment includes face painters, dancers and stilt walkers and stage artists. It starts at 4.30 p.m., with the main event at 8 p.m.
Right: the route of the Dublin City Marathon.