It probably doesn't matter what level they use, .02, .04 or .08% because airline accidents almost never are affected by these B/A standards. It might look good in the newspaper that countries are improving air safety but statistics show that drugs and alcohol are not the problem. Elizabeth Dole started this whole thing when she was in charge but after millions of dollars worth of testing and some cancelled flights because nobody could find a medical facility open on a Sunday to do the random test, nothing was accomplished.