Originally Posted by
chrisx
What is a good tail light? Best light means different characteristics for each rider.
Are there any that take AA batteries?Yes.
Are there any that blink yellow like a cars blinker? Not sure, VIS 180 steady on.
Which light is visable from the greatest distance? Usually high powered ones w/ rechargeable li-ion batteries.
You should add your budget. Lights can cost as little as US$1; to over US$1,000.
Have you considered dyno powered lights?
Light & Motion VIS 180 series have side amber lights added; built in rechargeable batteries. Bottom light in this photo:
Rear lites test, East River path NYC by
1nterceptor, on Flickr
Some Planetbike lights use AA/AAA:
Blaze 140 SL - Black
Superflash Turbo