The number of people killed on the State's roads so far this year has risen to 114, compared to 86 in the same period last year.
Mr Michael Joyce (34) of Claremount Avenue, Navan, was fatally injured when the car he was driving left the road and collided with a gatepost shortly before 1 a.m. yesterday morning. The accident occurred on the Navan Road at the townland of Bective.
His death brought the number of people killed in the last seven days in the State to seven.
A husband and wife lost their lives on the outskirts of Derry yesterday when the car in which they were travelling was in collision with an articulated lorry at 11 a.m. Mrs Sheila Quigley (71), from Rinmore Drive in the Creggan area of the city, was killed instantly when the Renault Clio car she was driving was in collision with the lorry on the Buncrana Road close to the Derry-Donegal Border.
Mrs Quigley's husband, William (74), who was a front-seat passenger in the car, was taken by ambulance to Altnagelvin Hospital but he died from his injuries at 4 p.m.
Meanwhile, investigations are continuing into a fatal accident which happened shortly before 7 p.m. on the N8 Cork Road, two miles south of Durrow in Dereen, Co Laois, on Sunday.
Three vehicles were involved in the collision in which one woman in her 50s was fatally injured. Four other people were taken to Portlaoise hospital with injuries.