What is the stopping force of your average road bike? Does anyone have any data on the stopping force of a modern road bike? IE when a road biker slams on the brakes the force applied to the ground is x.xxx Newtons (or lbf).

Another way to ask would be if anyone has any speed vs stopping distance vs rider weight data for road bikes.

TO CLARIFY : I'm asking if anyone has a data set of numbers, I'm fully capable of going out and testing my own bike and doing the physics / math to obtain the information I need, but I'd just rather not do the testing. I would expect some deviation based on the kind of brakes and rims involved, but I would expect any modern road bike to have similar stopping force.
Beck Forensics have figures (pdf), peaking at about 0.5g for a MTB on flat concrete. I used this search to find that paper and some of the other results look relevant.

The number that springs to my mind is 0.3g, but that may be for cars. Bicycling Science or Human Power are where I would go for well-researched answers. Human Power doesn't seem to have anything, although it may just be missing from the index. 

A great deal depends on the geometry of the bicycle, since that's the limiting factor (most bikes can throw the rider by overenthusiastic braking). A little thought experiment might help. Assume the CoG of the rider is in the hips, so about 10cm above the seat. A line from there through the front contact patch will be roughly 45 degrees above horizontal (give or take, say 15 degrees), so an upper limit of 1g is likely.

To further Feynman it, 10m/s is 36km/hr, so 1g would stop you from 36km/hr in one second. During which time you'd travel about 1/2at^2 or 5m (I cheated by making t=1). One simple test would therefore to sprint to 35kph then hit the brakes at a marked point and see what your stopping distance is.

On reflection, 1G or 10m/s/s sounds more plausible as an upper limit.