For this Act, a person is fit to drive a vehicle, or run its engine, if the person—
(a) is apparently physically and mentally fit to drive the vehicle; and
(b) without limiting paragraph (a), is apparently not affected by alcohol or a drug that affects the person's fitness to drive; and
(c) is not, at the relevant time, found to have a concentration of alcohol in the person's blood that exceeds the amount permitted by an ACT law.