2012 Problem Identification (ID) Report

7MB - Final Report. For the most part, the figures are self-explanatory. However, the figures titled “Involvement in injury crashes by driver age and gender, 2011” require some explanation. Each bar in the figure represents the ratio of drivers in that category in an injury crash to the number of licensed drivers in that category. For example, in Figure 23, you’ll see that 23 year-old males have an involvement score of 2. Let’s assume that 23 year-old male drivers were involved in 3% of all of the injury crashes in Colorado and that 23 year-old male drivers account for 1.5% of the licensed Colorado driving population. The involvement score is simply the ratio of these two numbers (3/1.5 = 2).