(1) A person must not traffic in a controlled substance.Penalty: Fine not exceeding 100 penalty units or imprisonment for a term not exceeding 4 years.(2) If it is proved in proceedings for an offence under subsection (1) that the accused it is presumed, unless the accused on the balance of probabilities proves otherwise, that the accused had the relevant intention or belief concerning the sale of the controlled substance required to constitute the offence.(a) prepared a trafficable quantity of a controlled substance for supply; or(b) transported a trafficable quantity of a controlled substance; or(c) guarded or concealed a trafficable quantity of a controlled substance; or(d) possessed a trafficable quantity of a controlled substance; or(e) imported a trafficable quantity of a controlled substance into Tasmania