Two more people, including a woman (91), have been left with serious injuries
Seven people have died in the last three days after incidents on Irish roads.
On Sunday a cyclist (50) became the latest person killed on the roads after he was hit by a camper-van in Co Clare.
The man was rushed to University Hospital Limerick after the collision which occurred on the N18 at junction seven, where he was pronounced dead.
The crash occurred at around 11.45am this morning.
No one else was injured in the incident.
The stretch of road is closed to facilitate a Garda Forensic Collision Examination.
Overnight gardai in Cork and Mayo attended two fatal crashes, where two young men died.
A teenage couple also died after the car they were travelling in collided with a truck.
Gary Kelly (19) and Delia Keary (18) died a day apart. Gary was pronounced dead at the scene, while his girlfriend died in hospital on Saturday.
Meanwhile, a young man also died in hospital on Friday after he was hit by a car on Wednesday.
The man named locally as Kyle Walsh (20) died just days shy of his 21st birthday which falls tomorrow.
Meanwhile, a cyclist was killed in an early morning crash on Friday in Dublin City Centre.
Solicitor Paul Hannon died in hospital after being struck by a taxi.
Separately, a 91-year-old woman is also fighting for her life in hospital after being struck by a car in Dublin on Saturday.
Gardaí at Blackrock Co Dublin are appealing for witnesses following the incident.
It is understood the women has serious head injuries as a result of the collision which occurred on the Old Dublin Road, Stillorgan Co Dublin at approximately 4.12pm yesterday afternoon.
The woman was struck by beige coloured Saab outside the Asian Market. Gardai confirmed she remains in a serious condition at St. Vincent’s University Hospital.
Investigating Gardaí are appealing for witnesses or anyone with information to contact them.
A further investigation is also underway after a serious crash on the N3 near Belturbet at approximately 6pm on Saturday.
A car collided with a van at the scene.
The driver of the van was taken to hospital with serious injuries and was later transferred to a Dublin hospital.
The occupants of the car were taken to Cavan General Hospital with non life-threatening injuries.