Road Safety Bill [HL]

In answering the points that have been raised both by the noble Lord, Lord Hanningfield, and other noble Lords, will the Minister turn his mind to this question? When a driver is in charge of a car, does it mean that he is in the car with the keys in his pocket or that the car is stationary and the engine is switched off? In the case of drink-driving, he may well be considered in charge of the car and guilty if he is in the car with the keys. On the other hand, if he stops by the roadside or is in a traffic jam and turns off the engine, which he should do, it seems that some discretion should be exercisable on the part of the prosecuting authorities.