http://www.mediastatements.wa.gov.au/Pages/StatementDetails.aspx?listName=StatementsBarnett&StatId=9113
Unsurprisingly a few years later than the other states, it seems like WA will get a heap more speed cameras. The current fixed cameras don't have any signage and only the other day I noticed a new one has been installed on the Kwinana Freeway northbound just before South Street.
Can almost guarantee the point-to-point camera(s) will go on Kwinana Freeway south of Safety Bay Road and/or Forrest Highway and/or Old Coast Road - the first two being the two roads with the highest design standards in the state but both deadly boring at 110km/h.