Studies undertaken in conjunction with Australia's move from speed limits to in built-up areas found that the measure was effective in reducing speed and the frequency and severity of crashes. A study of the impact of the replacement of with speed limits in New South Wales, Australia, showed only a 0.5 km/h drop in urban areas and a 0.7 km/h drop in rural areas. The report noted that widespread community compliance would require a combination of strategies including traffic calming treatments. Information campaigns are also used by authorities to bolster support for speed limits, for example the Speeding. No one thinks big of you. campaign in Australia in 2007.