I’d been driving 7.5 tonners for a few years, then went and took my Class 1 in 1984. Spent a week or two on L’s around Croydon in a D series (2417?) with a 38’ double bogie trailer. Come the test I’d done all the roadwork OK then it was back to the test depot for the nadgery stuff. My instructor - a bit of a larrikin he was too - was watching from the shed. All went OK then the emergency stop - got it up to ~30 or so, then when the examiner smacked the dash with his clipboard I hit the anchors… and he nearly went through the window. He gave me an old fashioned look but passed me and my instructor was still [zb]ing himself laughing when I got back to the shed. 
Happy days.