Some Mothers Do 'Ave 'Em S03 E05 King of the Road

"Before MR. BEAN there was Frank Spencer... the original Master of Disaster."

Frank has a new job as a motorbike dispatch rider. He has to take a motorbike test. The examiner tells him to drive around the block and stop when he gets the signal. Frank takes a wrong turning and the examiner steps out in front of the wrong motorcycle. He ends up in hospital, while Frank rides around for hours looking for him.