The Road Safety Authority has expressed concern that over a third of drivers and passengers killed on the State's roads so far this year were not wearing a seatbelt.

In its mid-year review for 2015, the RSA has warned that if trends continue, 100 people may die on the roads before the end of the year.

So far this year 101 people have been killed in road crashes, 22 down from the same time last year, but road safety chiefs say there can be no room for complacency.

The RSA said younger and older drivers continue to remain a high risk group.

While there has been a reduction in the number of pedestrians killed on our roads there is concern about visibility.

Ten of the 12 pedestrians killed between January and July were not wearing any high visibility clothing.

The highest number of driver fatalities was recorded in Cork, where six people have been killed.

Sunday was the worst day for fatalities this year, compared to midweek in 2014.

Gardaí say that 88,409 drivers have been detected for speeding so far this year.

13,560 people have been caught using a mobile phone while driving, while 3,666 drivers were found to have been drink driving.