They came into effect at midnight last night.
People must understand they share the road with cyclists and work to make it a safer place for everyone.
That's the view of Laois/Offaly Garda Chief Superintendent John Scanlon who believes new laws on dangerous overtaking of cyclists will make a significant difference to road safety.
From midnight last night, a driver will now receive 3 penalty points and a fine of €120 if they're found guilty of the offence.
He says the application of the law will be straightforward: