idiots like you that causes accidents let alone traffic too.
eventually traffic will build up either way especially rush hour, its a bottle neck.
someone has already mentioned it, signs say it will merge in x distance... which mean there is still x distance of 2 or 3 lanes to use. deal with it.
so people try to squeeze past, let them through then, chances are when the road clears again he'll shoot off faster than you anyway.
I personally hate driver that purposely beat you to the line, or in this instance squeeze past you in the closed lane, just to get in front, then when road opens up drives like a snail.
drive in the far east, you will see what real rush is.
you should be happy this country drives quite conservatively already.