Gardaí have played down the extent of problems with the GoSafe speed cameras. Senior officers have told an Oireachtas Committee that the number of speeding charges from GoSafe cameras is no higher than those caught by gardaí.

It has emerged that gardaí are having difficulties securing convictions for some speeding offences, due to question marks around the accuracy of the cameras.

It follows claims that a series of summonses had been struck out because of problems setting up the cameras, which then detected some drivers as 'speeding' when they were within the limits.

The head of the Garda National Traffic Bureau, Assistant Garda Commissioner John Twomey are discussing the issue with the Oireachtas Transport Committee.

Superintendent Cornelius O'Donohoe of the Garda National Traffic Bureau says the machines are given regular checks to make sure they are working properly.

Meanwhile the chairperson of the Road Safety Authority (RSA) says he is approached 'almost' daily by gardai echoing his concerns about resources within the force.

The annual conference of the Association of Garda Sergeants and Inspectors (AGSI) this week heard that there are 30% fewer sergeants around the country now compared to 10 years ago.

So far this year there have been six fewer deaths on the roads compared to the same time in 2013.

However Gay Byrne told the Pat Kenny Show here on Newstalk earlier he is being told on a regular basis about how enforcement is suffering because of cuts to resources.