France will introduce on-the-spot fines nationwide for drug users, particularly targeting cannabis, from September.
The move comes amid concerns about drug-related violence and was announced by PM Jean Castex on a trip to Nice, which has seen weeks of unrest.
The roll-out of fines follows tests in cities such as Rennes and Marseilles.
The €200 ($233; £182) fixed fine will reduce to €150 if paid within 15 days. France is one of the leading consumers of cannabis in Europe.
Legislation on recreational cannabis use varies widely from country to country. Several nations, like Canada, have legalised it while others have policies of minor punishment. But many others impose severe jail terms.
France does already have laws that allow for up to a year in prison and fines of up to €3,750 for the use of illicit drugs, without specifically distinguishing drug types.
But the laws, dating back to 1970, seldom lead to prison sentences, with magistrates preferring alternative punishments, often warnings.
Although there is the reduction for early fine payment in the new system, if an offender fails to pay up in time it increases to €450.
Mr Castex said the system would come in at the start of la rentrée, the beginning of the school year after the summer break.
The fines were initially proposed back in 2018 and were rolled out as tests in Rennes, Marseilles, Lille, Créteil and Boissy-Saint-Léger.