Originally Posted by ItsJustMe

Sometimes it doesn't matter what you have. If people are not paying attention, you might not be able to make any difference in whether they see you.

Case in point: My brother is a paramedic/fireman, and last year they had some serious damage done to a large fire truck. It was parked on the road, brakes locked, all lights running, surrounded by other fire vehicles with lights running, police cars with lights running, barricades and a couple dozen guys walking around in full turnout gear. Some guy came in and hit the back of the truck with his pickup full speed (on the expressway). No skid marks whatsoever. Pushed the truck forward about 10 feet, which is quite impressive given the weight of the truck. The only good thing was that they had all the equipment right there to peel the bent steel out from around the puddle of jello and gristle that used to be the pickup driver.

Clearly, this guy managed to "not see" 4 fire trucks and 3 police cars with full EMT light packs, a dozen guys with tons of reflective stuff on them, AND a burning vehicle on the side of the road. The accident took place on the expressway in a section with no turns for over a mile. Even texting or using the phone is hard to believe as an excuse; that mess should have been visible for a minute before he got there.

For people like that, the only hope would be to have enough kilowatts of light that their hair catches fire from the beam. They might notice that.