Here in Australia, yes, but I'm sure the same principles apply on how 0-60 times are recorded.
Reason I asked the question to begin with, is because I did a rough calculation when I wanted to test my 0-60. From a stationary start obviously, I think I got to 60 in about 3-4 seconds, but I did floor it. Hence why I asked if they floor it when they do the test or go no higher than a certain RPM.