(1) in the case of a motorcycle but subject to subparagraph 2,(a) sit on the vehicle’s seat;
(b) put the transmission in the neutral position;
(c) ensure the stability of the vehicle in the upright position;
(d) if the vehicle has a control system that may affect the sound level, adjust the system in the position giving the maximum noise;
(e) where the measurement method where the engine rotates with a constant speed is applied, activate the throttle of the vehicle in order to reach and maintain for at least 2 seconds the rotational speed of the engine to the value determined in the second and third paragraphs of section 5;
(f) where the measurement method where the engine rotates with a variable speed is applied, activate the throttle of the vehicle in order to increase progressively for at least 2 seconds the rotational speed of the engine from the idle engine speed to the value determined in the second and third paragraphs of section 5;
(2) in the case of a motorcycle with an automatic transmission having no neutral position and a moped,(a) let the vehicle rest on its centre stand;
(b) ensure the stability of the vehicle in the upright position;
(c) lift the back wheel from the ground so that it can turn freely;
(d) if the vehicle has a control system that may affect the sound level, adjust the system in the position giving the maximum noise;
(e) stand beside the vehicle on the opposite side from where the measurement is carried out so that the rotational speed of the engine can be controlled;
(f) where the measurement method where the engine rotates with a constant speed is applied, activate the throttle of the vehicle in order to reach and maintain for at least 2 seconds the rotational speed of the engine to the value determined in the second and third paragraphs of section 5;
(g) where the measurement method where the engine rotates with a variable speed is applied, activate the throttle of the vehicle in order to increase progressively for at least 2 seconds the rotational speed of the engine from the idle engine speed to the value determined in the second and third paragraphs of section 5.