This is false information. It is not intended to make the affixing of a macaroon mandatory
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in the rear of vehicles driven by persons over 70 years of age.
Although the affixing of a special badge on their car is not compulsory when drivers are getting older, they are nevertheless advised to consult a doctor regularly to check their state of health and also to adapt their driving if necessary, the required skills changing with age. Indeed, seniors represent 25% persons killed in a traffic accident while they were 19% of the population.
Reminder
There are buttons for accompanied driving and for new drivers (