Section 21 of the Act of 2002 is amended -
(a) by substituting for subsection (1) the following:
"(1) The onus of establishing prima facie proof of a constituent of an offence (including the speed at which a person, whether the accused or another person, was driving) under section 47, 52, 53, 55, 91, 92, 93 or 94 of the Principal Act or section 35 of the Act of 1994 may be discharged by tendering evidence from which that constituent can be inferred of measurements or other indications which were given by -
(a) electronic or other apparatus (including a camera) capable of providing a permanent record (including a permanent visual record) and are contained in such a record produced by it, or
(b) electronic or other apparatus (including a radar gun) which is not capable of producing a permanent record.
It is not necessary to prove that the electronic or other apparatus was accurate or in good working order.",
(b) in subsection (2) (a), by substituting for subparagraph (i) the followi