Glow in the dark roads hit a snag

The pilot project that looks to replace streetlights with video game-esque glow-in-the-dark lane markers in the Netherlands has hit a bit of a snag. If you're in need of a refresher, the lines absorb ultraviolet light during the day before glowing through the night. So far, performance has been less than consistent. The markers don't give off a uniform amount of light, and more importantly, they've been disappearing with heavy rainfall. 

Yeah, we should probably make sure they work when it rains.