[France Culture] Paint and materials with intelligent colors
Although phosphorescence of materials is not unknown to us - we know it from alarm clock hands or the little stars stuck to children's bedroom ceilings - this process had never before been developed in such an effective way on a road that it could withstand abrasion, wear and tear, rain or even frost.
Inaugurated in 2018 in Pessac, France, the first bicycle path to be marked with photoluminescent paint developed by Olikrom has since been emulated by many others. Nearly 80 towns and cities, including Annecy and more recently Brest, have chosen to make their soft mobility lanes safer with this paint, which lights up at night. Loaded with pigments that store light during the day and give it back when it's dark, it provides users with a luminous guide visible for ten hours from a distance of 80 meters.
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https://www.franceculture.fr/economie/olikrom-des-peintures-et-materiaux-aux-couleurs-intelligentes