AT around 10.15am on Friday morning a man in his early 40s was killed when his motorbike was in collision with a truck on the M50 northbound between Junction 7 N4 Liffey Valley and Junction 6 N3 Castleknock.
The rider of the motorcycle was pronounced dead at the scene. The driver of the lorry, a man in his 50s, was taken to hospital for assessment.
The man who was fatally injured has been named locally as Derek Martin (42) from the Ballymun area of Dublin 11.
Because of the nature of the fatal collision the northbound lane of the M50 had to be closed for a forensic examination, which resulted in severe traffic delays around the city.
Both Mr Martin and the truck were travelling in the same direction on a straight section of the motorway when the collision occurred.
It is understood footage from road cameras or dashboard cameras is being examined as part of the inquiry into what the sequence of events leading up to the collision was.
When the vital assessment of the scene was completed the motorway was reopened on Friday afternoon.
Gardaà at Blanchardstown are appealing for witnesses, and anyone with camera footage taken at the time, to contact them on 01 666 7000, the Garda Confidential Line on 1800 666 111, or any Garda Station.
Early on Saturday morning a 62-year-old man died after the bicycle he was riding was in collision with a taxi on Dame Street in central Dublin.
The incident happened at around 5.25am and a section of Dame Street was closed afterwards to facilitate a forensic investigation.
The man who died has been named locally as Peter Murphy from Windmill Park in the Crumlin area of Dublin.
It is understood that both the taxi and Mr Murphy were both travelling in the same direction towards College Green prior to the collision.
Mr Murphy was seriously injured during the collision and was taken to St James’ Hospital, where he later died.
The driver of the car was treated for non-life threatening injuries.
Gardaà in Pearse Street are appealing to anyone who may have witnessed this collision to contact them.
They are also appealing for anyone who may also have camera footage, including dash cam, to contact them on 01 666 9000, the Garda Confidential Line on 1800 666 111, or any Garda station.
The latest deaths bring to 76 the number of people killed on the roads this year, compared to 61 at this time last year.
Nine motorcyclists and five cyclists have died on the roads this year. 28 vehicle drivers and 20 vehicle passengers have been killed in collisions, and 14 pedestrians.
Road fatality figures for 2023 were higher than in recent years, with 184 people killed in 173 fatal collisions, a 19pc rise on the 2022 figures.
Already this year the road death figures are running more than 21pc higher than at this time last year.