During 2006, the Swedish Road Administration and the National Police Board began the introduction of a more modern version of automatic traffic safety control (ATSC). A new system, which enables a considerably greater degree of automation to be used in speed controls via digital technology, was introduced. VTI has evaluated all 51 first time ATSC sections (where there were no cameras before) in a before-after study. A with-without study includes, apart from the above first time sections, also 45 of a total of 55 upgraded ATSC sections (which had the older system during the period up to 2005) that were installed in 2006. In the before-after study, the results for the before years 2003—2005 are compared with the results in the after years 2007—2008. With the help of with-without studies, the actual results during 2007—2008 are compared with normal or expected results for the same years and the same types of roads without camera surveillance. The before-after study and the with-without studies produce approximately the same result, which is a strong point. The results suggest that ATSC reduces the number of fatalities by about 30 per cent and the number of fatatites and serious injuries by about 25 per cent. The result concerning the number of fatalities is still not fully statistically verified (as regards effect significantly different from zero). The probable explanation for this, however, is that the statistical accident material is still small. (Author/publisher) This report may be accessed by Internet users at http://www.vti.se/EPiBrowser/Publikationer%20-%20English/R696Eng.pdf
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