The new law
9(3) A municipality or police service must not use a photo radar system to detect a speed limit violation that occurs within a construction zone, unless
(a) one or more construction workers are present in the zone; or
(b) the municipality
(i) has, in accordance with the Act, imposed a speed limit in the zone that is lower than the maximum speed normally permitted for the portion of highway containing the zone,
(ii) has placed an approved traffic control device at the beginning of the zone stating the lower speed limit and at the end of the zone indicating that traffic may proceed at the maximum speed normally permitted, and
(iii) has, if the municipality considers it advisable to do so, placed approved traffic control devices at intervals within the zone stating the lower speed limit.
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