Gardaí are to operate a number of additional checkpoints in Dublin over the Easter Bank Holiday weekend in an effort to increase road safety.
An extensive checkpoint operation is to be put in place at strategic locations in the city from Thursday to Monday.
All checkpoints will operate mandatory alcohol testing in addition to enforcing all other aspects of road traffic legislation, gardaí said.
There will also be 16 "super checkpoints" manned by extra gardaí to allow a larger numbers of motorists to be processed.
The move follows a significant rise in the number of people arrested on suspicion of drink/drug driving during the period last year.
A total of 69 people were arrested on suspicion of driving while under the influence of alcohol or drugs during the Easter period in 2008, a 41 per cent increase on the previous year.
There has been only one fatality on the roads in the greater Dublin area so far this year compared to 11 in 2008 and 10 in 2007.
Gardaí said the reduction in fatalities was the result of "a significant change in driver behaviour".
Excessive speed, drink driving and non-wearing of seat belts continue to remain the key contributory factors to death and serious injury on Irish roads, a Garda spokesman said.
"This weekend's operation is aimed at tackling all of these activities in an endeavour to encourage a positive change in driver attitude and behaviour," he added.
Gardaí also advised motorists that in addition to the extra xheckpoints, other Garda enforcement activities will be undertaken throughout the region over the weekend.