As it been stated here it different in every state. Here in Mass it legal to ride two abreast. But other than on an organized ride, there are very few folks I will ride along side of at road speeds. It is tougher on the side roads and requires more concentration to do so. Without it you end up tangled up in each other along side of the road or in it as noted.
On some of the Police escorted rides they request us to ride staggered then to a single line when they come up behind us so they can move up the center line of the road to the front. It a hoot to watch them and direct oncoming traffic (cages) to move off the road so they can get by up the center line. I have to resist the urge to take off behind them as they look to be having more fun than us.

thanks brad
redbaron,Fl.

Glad to be of assistance redbaron,FL.
You might save the following link to your favorites: http://www.leg.state.fl.us/statutes/ and for fun, you might revisit Chapter 316 and those sections applying to motorcycles.
Hope you are enjoying our nice weather.
Take care. Sincerely, Brad