i see these on the road and i've been thinking about ripping on off and putting it on the bike. these Barricade Lights are 360 degree view, can be seen from 1000meters away, they come in red or yellow. the solar ones need 8 hour charge to last for 5 nights, can be steady or flashing. 1.5-2lbs, so pretty heavy. runs between 75-113 lumens...only wory is a cop pulling you over and asking where you stole the light from. solar ones are on ebay for 50bucks with shipping

dunno about the battery 6v and 12v, on how bright or how long they last.