Gardai will be out in force across the country today as part of National Slow Down Day.
The 24-hour speed enforcement operation runs from 7am until 7am tomorrow.
Officers will be conducting high visibility activities at 1,300 'speed enforcement zones' to increase compliance and act as a deterrent.
Brian Farrell from the Road Safety Authority says speeding's the main factor in road deaths here.
"If we look at the collision data it's telling us that speed is a factor in a third of all collisions that are happening out there.
"When we look at the free speed surveys that we conduct in the RSA, this is when we go out and monitor the free speed of vehicles when they're unimpeded on the roads, when there's no traffic congestion, we're finding that the majority of vehicles out there are speeding, especially on urban roads."
