Madam Chair, an obvious example is that the person is not going to drive a car. If someone is going to get behind the wheel of a car and take command of a motor vehicle, it is reasonable to expect that the person might be pulled over, particularly if he or she was also consuming alcohol. It is a pretty clear that if a person does not get behind the wheel of a car, the person has a reasonable expectation that he or she will not be tested.
House of Commons Hansard #416 of the 42nd Parliament, 1st Session. (The original version is on Parliament's site.) The word of the day was chair.