Kimley > Horn
60 to 80 % |
13 |
19 |
34.23 |
66.95 |
1.14 |
2.12 |
80 to 100 % |
20 |
139 |
66.95 |
2277.07 |
2.12 |
47.64 |
Bicycle & Pedestrian HIN |
0 to 20 % |
0 |
1 |
0 |
6.78 |
0 |
0.6 |
20 to 40 % |
2 |
4 |
6.78 |
10.86 |
0.6 |
0.96 |
40 to 60 % |
5 |
12 |
10.86 |
16.05 |
0.96 |
1.36 |
60 to 80 % |
13 |
14 |
16.05 |
24.36 |
1.36 |
1.73 |
80 to 100 % |
15 |
38 |
24.36 |
170.6 |
1.73 |
8.82 |
The total score is then calculated by adding up the crash count , crash frequency , and the critical crash rate scores for a maximum of 15 and minimum of 3 . The highest ranked segments were identified and used as part of the selection of the HIN .
EXAMPLE CALCULATION
Matlock Rd ( Between Stephens St and Bardin Rd )
• Total KAB crashes ( Weighted ) = 86 o Top 20 % Quantile = 5 points
• Crash Frequency = 168 crashes / mile o Top 20 % Quantile = 5 points
• Critical Crash Rate Ratio = 12.1 o Top 20 % Quantile = 5 points
• Total Score = 15 points
HIGH-INJURY NETWORK SCREENING
The selection of the HIN prioritizes high scoring segments , while also maximizing the amount of KAB crashes and minimizing the percentage of total roadway network . Roadway segments were selected as part of the HIN with the following parameters :
• Total score is in top 40 % quantile o 11-15 total points for the Vehicular HIN o 10-15 total points for the Bicycle & Pedestrian HIN
• Gaps between high scoring segments are connected o Typically , within ~ 3 roadway segments where KAB crashes present o Lower scoring segments close most gaps
• Roadway segments capture the majority of network KAB crashes (> 50 %)
APPENDIX A : HIGH INJURY NETWORK METHODOLOGY A-5