Been a while since I was doing much distance riding and where I am is very hilly and the traffic is 70-80 mph much of the time. The speed limit is 70, but because the next town is 16 miles away and I'm between it and San Antonio, the traffic going toward SA is often at 80 when it passes my street.  
 
I've sailed a fair amount and many sailors use a rescue light attached to their PFDs that is meant to help locate them when overboard. They are very bright and flash and I'm wondering if anyone has used one on the back of their trike/bike as a rear warning light? Wanting to let these guys know as far back as possible that I am in front of them (with decent shoulder much of the time).

Quote from Monkeywrangler22 on May 25^th, 2014, 4:52pm:

Also, a few years into my owning one, I can testify to their bulletproof quality.