So its pouring down rain here in St. Louis right now. Incendiary flares were the staple of traffic control for a long time. They certainly have their cons, from chemicals to being unavailable in wet weather. Not to much too dry of weather (wildfires).
So whats the alternative? Aervoe Super Road Flares. They are LED flares, no heat, waterproof, drive over-able (is that a word?), magnetic base, bright, and rechargeable. Really all the best things!
Heres a quick video we made demonstrating our point.