6. The conditions mentioned in regulations 4(2) and (3) and 5(2) and (3) above are the following:—
(a)the surface on which the vehicle is tested is dry asphalt or concrete;
(b)the rider is a person not exceeding 75 kg in weight;
(c)no passenger or load is carried;
(d)the test route is so located that acceleration to, and deceleration from, maximum speed can take place elsewhere than on the test route itself;
(e)the test route does not have a gradient exceeding 5%;
(f)the tyres of the vehicle are inflated to the pressure recommended by the vehicle manufacturer for the weight of the vehicle and the conditions under which the test is carried out, where such recommendations have been made and not withdrawn;
(g)the vehicle is ridden in opposite directions along the test route and the speed recorded for the purpose of the test is the average of speeds measured for each direction;
(h)when being driven along the test route, the vehicle is driven in such manner and in such gear as to achieve the maximum speed of which it is capable when the regulator is not in operation (for the purposes of the test in regulation 4(2) and 5(2)) and when the regulator is in operation (for the purposes of the test in regulation 4(3) and 5(3)).