That's according to the Road Safety Authority.
Seat belts reduce the risk of death among front seat passengers by half - and back seat occupants by 25 per cent.
That's according to the Road Safety Authority, it has found 27 per cent of drivers and passengers who died in crashes last year had no belt on.
The authority has urged everyone to belt up, saying they are often the difference between survival or death in the event of a crash.
Brian Farrell, Communications Manager with the RSA, believes it is a 'no brainer':
The research also found about a fifth of people don't often wear a selt belt in the back of the car.
Carlow County Council Road Safety Officer John McDarby says the figures are shocking:
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