MPs and peers will vote on a ban preventing smoking in cars with children early next year, with the law set to be introduced on October 1 2015 if it's given the go-ahead.
Anyone in England found smoking in a car containing a person under the age of 18, or failing to prevent another person from smoking, will be fined £50. Car smoking bans have also been put forward in Scotland and Wales, while Northern Ireland is considering the move.
As it stands a 'yes' vote is expected in England due to the majority of MPs pledging their support for the proposal earlier this year, theguardian.com reports.
Deborah Arnott, chief executive of Action on Smoking and Health, said: "We are delighted... The protection of children from second-hand smoke in cars will help de-normalise smoking and protect children from this deadly addiction."
However, many feel the ban is an overreaction. Simon Clark, director of smokers' lobby group Forest, described the change in law as "taking a sledgehammer to crack a nut", as the "overwhelming majority of smokers" with common sense would not light a cigarette when a child is present.
"The regulations are unnecessary and excessive," he told bbc.co.uk. "Do we really want to criminalise people for lighting a cigarette in a private vehicle?"