From today six mobile cameras will target the state's high crash risk areas.
The speed cameras are being reintroduced as part of the state government's road toll response package, announced in March.
Roads Minister David Borger says speeding kills and if these cameras make motorists think twice about driving above the speed limit then they've done their job.
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More than two hundred people were killed in speed related crashes last year.
The list of 150 locations where the mobile speed cameras will be rotated can be found on the RTA website.

