Yes. I don't have the light bar, but their tag with the Knight-rider light bar on it. I've had 'em try to kill me from the front, but so far, no one has ran over me from the rear yet. I've asked alot of people and everyone of them so far says that I really stand out and the light bar grabs their attention.
I'd say it's a plus.
btw.....It might be illegal where you are. I've asked the local county AND city popo's about it's legality before and both told me that it's technically illegal here in the county, city AND state. HOWEVER......and it's a pretty big however.....they've all said the same thing......that there isn't a law officer out there that'd pull me over just for the light alone. They all understand that it's a motorcycle and I'm trying to stay alive by being seen. However, they all said that if they see me doing something stupid or otherwise against the law, that I'm most likely get a ticket for the light.
btw.....I also ride on a military base. Those cops are the worse for details, rules, regulations and laws, and so far nobody has said anything about my tag light and I've been riding with it for three plus years now.