Motorist arrested after being caught doing 136km/h in 50km/h zone

Though the vast majority of drivers were found to be driving within the applicable speed limits, gardaí say there have already been some 'alarming detections'. File picture: Denis Minihane

Gardaí have caught more than 660 motorists breaking the speed limit on Irish roads since Monday morning, including one driver in Offaly who was clocked driving at 136km/h in a 50km/h zone.

Since 7am on Monday, gardaí have been monitoring the speeds of drivers nationwide as part of the force's Slow Down Day operation. Of the 157,298 vehicles that have been checked, 665 drivers have been detected speeding.