Legislation to ban smoking in cars where children are passengers may be ready by the end of the month.
Independent Senator John Crown and other campaigners have said they have met Department of Health officials.
They were assured in the meeting that the legislation will be finalised in the coming weeks with a view to having it implemented in the summer.
The legislation will make it an offence to smoke in a vehicle with children present or to allow someone else to do the same.
The pro-smoking group Forest Éireann has said that the suggested €3,000 fine is disproportionate.
Anti-smoking lobby Ash Ireland said the planned changes are good news.
A spokesperson for the Department of Health said that progress is being made, but work still needs to be done on the issue.
A definite implementation date is not yet known.