2B is the hardest to pass among the three bike classes, so, always go for circuit and road revision to practice, i learned it the hard way, had to take twice because i failed on the first attempt, mostly on the road. only went for one road revision before the test, felt pretty confident that i could do it, but was wrong and paid the ultimate price of failure. my circuit was perfect, but the road alone costs me lots of demerit points. i focused too much on circuit and was complacent with the road part of the test.