The Isle of Man government's plans to make it illegal to smoke in vehicles containing children aged under 16 are to be put out for public consultation.
The bill would also see a ban on the display of tobacco products in shops on the island, where around one in five residents smokes regularly.
Health Minister Howard Quayle said it would be a "very positive step" if the government's proposals become law.
Smoking was banned in the Isle of Man's pubs and clubs in 2008.
The British Medical Association has previously said all smoking in cars should be banned.
The government's plans would see:
- A ban on tobacco displays in shops
- Further controls on tobacco advertising
- A ban on the sale of tobacco from vending machines
- The introduction of the ability to issue fines for smoking offences
- The ban of smoking in vehicles where children are present
The proposed legislation would also see a ban tobacco products being sold from vending machines and bring in fines for various smoking offences, including lighting up in cars when there are children inside.
The government said "strong support" was shown for the measures during a consultation in 2012.
Mr Quayle said: "We must do all that we can to prevent our young people and protect future generations."
The consultation will run until 19 January 2015.