A tourist enjoying Dublin was among four people who lost their lives in a black weekend on the roads.
The 47-year-old man was fatally injured in the incident just before 12.30am on Sunday.
Two women also lost their lives in a crash in the Midlands, while a man was killed in Roscommon on Friday night.
The latest fatality was a tourist who was hit by a car on Shelbourne Road, between Bath Avenue and Lansdowne Road, in Dublin 4.
Emergency services rushed to the scene following the incident early yesterday, but despite medics battling to save his life, the man was pronounced dead.
The driver of the car was uninjured in the incident. The road was closed off for a period as garda forensic collision investigators collected evidence.
It is understood that the incident is being treated as a tragic accident.
Two women died following a three-vehicle traffic accident in Co Westmeath on Saturday. A collision involving a truck and two cars took place at Hiskinstown, Delvin at around 3.30pm.
A 38-year-old was pronounced dead at the scene while a second passenger, aged 25, was taken to the Midland Regional Hospital in Mullingar but died later as a result of her injuries.
The female driver of the second car was airlifted to Tallaght Hospital and remains in a serious condition.
The male truck driver was uninjured.
Gardaí have appealed for witnesses and anyone with information is asked to contact Mullingar garda station on 044 9384000, the Garda Confidential Line on 1800 666111 or any garda station.
In another incident, a 50-year-old man was killed when his motorbike collided with a tractor in Co Roscommon.
Gardaí have launched an investigation into the two vehicle fatal road traffic collision, which happened at around 8pm on the N5 between Strokestown and Scramoge Cross.
The motorcyclist was pronounced dead at the scene.
The driver of the tractor was uninjured.