The most effective tape I've ever seen is DOT-C2 reflective adhesive tape for tractor trailers rigs. It has the fish scale-cross hatch pattern that reflects light from all angles. Might be available at truck stops. I'll try to post a pic of my commuter bike sometime. Absolutely blinding in headlights. Camera flashes have to be edited out.
Is all DOT-C2 tape the same? Of course it meets a minimum standard, but are some brands better than others?
I bought a roll (the alternating red/wide bands, it's also available in yellow as seen on school busses) from a Love's truck stop and wonder if there is better version out there. I don't mean its bad, just not as good as I expected.
Al