Revealed: How many people are killed on the roads every year - by speed alone
As many as 60 people are killed every year by drivers breaking the speed limit.
In How's Your Driving? broadcast on RTE tomorrow night, figures from the Road Safety Authority (RSA) reveal that between 2008 and 2012 speed was a factor in one in three fatal collisions.
91pc of drivers and motorcyclists who were speeding were male - and half of those drivers and motorcyclists who were speeding were aged between 16 and 24.
Velma Burns, from the RSA, said: "Over a five-year period speed contributed to 32pc of fatal crashes on our roads. That's 50 to 60 people being killed every single year due to a driver exceeding the speed limit."
Forensic Collision investigator Garda Mark O'Connor said moderate speeds can cause fatalities.
"50km is the old 30 miles an hour. Most people would consider that a slow speed, but there is a 5pc chance of a fatality at 30km but there is a 45pc chance at 50km," said Gda O'Connor.
"So, just in that 20km an hour there is more or less a 50/50 chance that person will die."