SPEED CAMERAS

In reply to the Hon. D.G.E. HOOD (24 July 2007).

The Hon. CARMEL ZOLLO (Minister for Emergency Services, Minister for Correctional Services, Minister for Road Safety, Minister Assisting the Minister for Multicultural Affairs): I am advised that:

The process that is used is based on analysing crash data, with a careful assessment of crash types that could suggest a red light violation, for example right angle, right turn, head on, sideswipe and hit pedestrian collisions. Comparative crash rates are derived based on each location’s average annual daily traffic (AADT) count, and intersections are ranked accordingly.

The list of proposed sites is forwarded to the Metropolitan Region of DTEI (and SAPOL) for comment. In particular, the Metropolitan Region will check if a listed site has undergone or will undergo remedial treatment that removes the need for a red light/speed camera. A new list of sites is then prepared that takes this feedback into account. The highest ranked crash sites are then assessed to determine if a red light/speed camera can actually be installed, and a list is finally produced of sites suitable for red light/speed cameras. Factors preventing installation are footpath width, services in the area, line of sight issues, and curvature of the road. Consideration is also given to the fact that generally, most crashes occur between 4pm and 8pm, and are on the outbound arterial routes from the Adelaide CBD.