A pilot project that saw detection cameras installed at a dangerous Dublin junction has revealed motorists broke the lights more than twice as often as cyclists.
And before fines were introduced for drivers, their rate of offending was even higher.
In the period before the fines, some 87 per cent of people breaking the lights were driving vehicles.
New figures, for a near 18-month period, reveal that when fines were introduced for drivers, their rate of offending dropped off.
During the full near 18-month period of the trial, some 32 per cent of red light offenders were on bicycles and 68 per cent were in vehicles.
Despite the success of the cameras – in making detections, issuing fines and bringing about a drop in the number of drivers breaking the lights – there appear to be no plans to replicate the system at other junctions.