Minister for Transport Leo Varadkar has said good enforcement is needed to reduce road deaths, but he admitted that it was difficult at the moment with garda numbers being reduced.

The minister said good behaviour by motorists was also needed.

Thirteen more people have lost their lives on the country's roads so far this year compared to the same period in 2012.

Speaking in the Dáil, Minister Varadkar said 30 people have been killed in road incidents since the year began, and this was a cause  of great concern.

He said it was too early to detect definite trends.

A new road safety strategy to last until 2020 will be launched next month.

On tertiary roads where signs showing the maximum allowable speeds, the minister said he had received a draft of a speed limit review for the country's roads.

He said he would favour the removal of the signs, or their replacement with the speed delimiter signs.

Independent TDs, Clare Daly and Mick Wallace raised concerns about the employment conditions of people operating the Go Safe vans which detect speeding infringements.

Mr Wallace said he had spoken to some drivers who were unhappy with work practices and conditions.

Ms Daly queried the safeguards around the Go Safe operation.

The minister said the vans were contracted by the gardaí and the first he had heard of the issue was today in the Dáil but he would ask the Road Safety Authority to look in to it.