ABS for bikes has been around for years in one form or another, one such example is budbrake
http://www.budbrake.com
There is also hydraulic systems with abs
Just before I give up on this line, I want to say thanks to actually contributing something useful,
putting aside the normal insults dumb asses seam to be obliged to put out, or the sanctimonious - well if you braked correctly every time and and other road users never did something stupid why would you need them
or the just plain Luddites , everything is perfect and you mustn't change anything (even though what they are defending to an older Luddite is modern new fangled and unnecessary)
but getting past all that crap, I have actually come out of this one up , as I had been looking for something like a linked abs type system. - so thanks you just made sitting through this boggling stupidity worthwhile.