I've had a good look around and from what I can tell the test always goes ahead unless the instructor deems it too unsafe. When its wet do you get any leeway? I would expect so as on the road you have to alter your speed and stopping distance based on the road conditions. My wife is doing the test with me and in her early stages of pregnancy but doing just fine hardly showing and riding to work everyday still. Still her swerving in the rain makes me nervous as you would imagine even though I know she can handle herself. Anyone else done the Armstrongs Thomo course in the rain before? Advice would be great, from what I can tell it should be even easier than the L's test we sat a year ago.