There have been renewed calls for legislation to safeguard bike users, following the deaths of two more people in cycle related incidents in recent days.
A Mayo man in his 50s who was knocked off his bicycle on Sunday died late last night, while an American tourist was killed in an incident in Co Kerry yesterday.
Galway East Fine Gael TD Ciaran Cannon has proposed that minimum overtaking distances be enshrined in law.
He said such measures have been proven to work elsewhere and should be introduced in Ireland.
He is calling on Minister for Transport Shane Ross and the Road Safety Authority to get legislation enacted as soon as possible.
A bill published by the TD would make it an offence to overtake at a distance of less than one metre in urban areas and of distances of 1.5 metres in places with a speed limit above 50km/h.
Mr Cannon said his proposals had widespread support among cyclists around the country.
He said more and more people were getting involved in cycling and that without legislation, he had no doubt there would be more fatalities.
The legislation provides for the imposition of fines and penalty points for those who do not adhere to minimum passing distances.