Riding in France with your kids this summer? By law, they now have to wear a helmet Mar 29, 2017 Law came into place in France last week that makes it mandatory for children under 12 cycling to wear a helmet.Law came into place in France last week that makes it mandatory for children under 12 cycling to wear a helmet. Tags: General News Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus