Those resources haven't been mentioned because that's not what the thread is about. If you have police, DOT, and the fire department there you'll be positioning where the scene commander tells you to; we're talking about what to do if you're alone. Flares are nice when you have time to set them up and enough of them in the rig to make a difference. I will also say that I've personally witnessed people driving through flare lines and into a scene at speed because "they live right down that road."