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The Ministry of Transportation has a proactive history of managing speed. During 1996 a Phase I review of speed limits was undertaken on major highway corridors. As a result, speed limits were raised from 90 km/h to 100 km/h on approximately 2,000 kilometers of road. During 1997, Phase II reviews were conducted. As a result, speed limits were raised from 90 km/h to 100 km/h on approximately 1,870 kilometers of Provincial highway. A before and after analysis conducted in 1999 suggested that average speeds increased by 3.2 km/h to 4 km/h on segments were speed limits were raised.
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So despite speed limits being raised by 10kph, average speeds only rose by an average of 3.2 to 4kph, not 10kph as assumed would be the case here.
Quote:
The results of the analysis are shown in Table 8 for the Phase I sites and in Table 9 for the Phase II sites. Based on the analysis, it appears that raising the limit from 90 km/h to 100 km/h resulted in a 12.9 percent reduction in crashes at the sites where speed limits were raised. The Phase II sites experienced an 8.6 percent reduction in total crashes. Both reductions are
statistically significant.
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So while speed did increase at the test sites, collisions decreased. Impossible according to some people here.
P22 of this document:
http://www.th.gov.bc.ca/publications...iew_Report.pdf