Local residents and builders who were working on a house nearby rushed to his aid and and assisted as best they could until the emergency services arrived.
But Mr Carney, who was the popular principal of St Louis Senior Primary School in Rathmines, was brought by ambulance to Tallaght Hospital where he later died from his injuries.
The circumstances of the crash are currently being investigated by gardai at Rathfarnham garda station. The incident is being treated as a tragic accident.
The elderly driver of the car involved was uninjured but shaken by the crash.
Neighbours were today rallying around the Carney family to support them, and at St Louis School, where the pupils are aged between 8 and 12, staff were said to be in shock.
The St Louis school community is in shock at the death of their “much loved principal” who had an “infectious enthusiasm for the job of teaching children”.
Board of management chairperson Jake Byrne described it as “a terrible tragedy for Pádraic’s immediate and extended family, his wide circle of friends and the school community.
"We are all deeply saddened by his sudden and untimely death.”
He said: “Pádraic was a wonderful leader in the school. His infectious enthusiasm for the job of teaching children and his warm and charming personality made him most popular with pupils, parents, staff and all who came to know him in his job.”
Offers of support have been pouring into the school, which has implemented its Critical Incident Management Plan.
Psychologists from the National Educational Psychological Service (NEPS) have been supporting and advising the teachers and the school community in their efforts to assist the pupils in dealing with the tragic event.
Mr Byrne said the family have requested that their need for privacy “at this sad and difficult time be respected".
He added: "Our sympathy and thoughts are with Pádraic’s family and friends.”
A special table was set up in a hallway where pupils and staff left flowers and recorded their memories of Mr Carney.
On February 12 Tonya McEvoy (34), also from Rathfarnham was the first cycling victim when she was killed on a cycling event at Rathcoffey in Co Kildare.
March was a black month for cyclists when four were killed in separate accidents.
Daragh Ryan was killed while cycling in Conyngham Road in Dublin City on March 12, and Paul Hannon was killed in an accident on Patrick Street on March 24, also in the capital.
Des Butler, who was in his 50s, was killed in Shannon on March 26. A day later Luby Ramirez lost her life when she was hit by a truck while cycling on Templeville Road in south Dublin.
In April a man in his 60s, Rob Ball, died in an accident in Skibbereen in Co Cork.
May was another poor month, with Annette Mannix being killed in Killarney, Donal O’Brien dying after an accident in Ballincollig in Cork, US visitor Janet Price being killed in an accident at the Gap of Dunloe in Co Kerry, and Patrick McHale dying after a crash in Ballina Co Mayo.
Gardai in Rathfarnham are appealing for witnesses to yesterday’s crash to contact 01 666 6500, the Garda Confidential Line 1800 666 111 or any Garda Station.
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