Originally Posted by Overandout
Actually, I don't think that is correct, the test centre has to run the test for a certain time (not sure now how long) and the driver has to keep both dots on the road for a minimum of 10% of the run-time. The machine buzzes when either one of the balls goes off the road, so in theory you are supposed to minimise the buzzing to not more than 90% of the time of the test.
So the pass rate is low, but the objective is to actually keep the dots on the road.
At least that is what I was able to find about it when I was researching.
EDIT: Found it, the test is 1 minute and 30 seconds minimum and the pass rate is from 10% to 100%.
Well having taken that test lots of time in my 32 years here, nevertheless I may be wrong. But I have never actually known or heard of anyone I know, failing. Even a 90 year old friend, who when her new licence arrived cut it up as she said she was unsafe to be on the road.
But as I said what do I know ?