The Superintendent of Leitrim is appealing to motorists to change their behaviour when driving on regional and local roads.
Over 77-thousand vehicles have been speed-checked during the first five hours of National Slowdown Day, and 138 were found to be over the limit.
In Roscommon today, a vehicle was detected travelling 114kms per hour in an 80km zone on the R370 Carrick on Shannon to the Four P's.
In Cavan, officers stopped a driver, travelling 89 kms in a 100 kms zone while towing a vehicle.
Roads with a speed limit of 80 kilometers or less are being targeted by Roads Policing Units until 7am tomorrow morning,
Leitrim Superintendent Chris Grogan says while some motorists may have a mind-set that limits on smaller roads are futile, they are in place for a reason