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Impact on Overall Crashes <br />Figure 5: Seattle crashes on non -arterial streets after speed limit change <br />The before and after research in U.S. Seattle, crashes onnon•arterials <br />cities of the effect of changing speed -21%total <br />limits on crash reduction is limited. crashes <br />However, the Seattle DOT recently <br />prepared an evaluation of changes, <br />they made in 2016 on non -arterial = <br />streets. <br />They have seen a 21% reduction in g <br />total crashes on local streets since <br />they lowered the speed limit on ---------------- -- ---------- <br />those streets to 20 mph. n15 ro. W17 mu <br />_T..,.W--.M.I... �m mhry oily. <br />Source: Dongho Chang, Seattle Deportment of Transponution <br />