Question
The table below provides sample data for 10 intersections with five years of crash data. The state department of transportation is undertaking an effort to
The table below provides sample data for 10 intersections with five years of crash data. The state department of transportation is undertaking an effort to improve safety on their highway network and is screening ten intersections to identify sites with potential for reducing crashes. Your first objective is to perform a network screening analysis for the 10 candidate intersections using the following methods:
A. The frequency method
B. The crash rate method
C. The rate quality control method
D. The crash severity method assuming EPDO = 541.74Fatal + 11.161Injury +PDO
Intersection | Major | Minor | crashes | crashes | crashes | crashes | crashes |
No. | Route ADT | Route ADT | Severity K | Severity A | Severity B | severity C | severity PDO |
1 | 33.3 | 13,200 | 0 | 11 | 35 | 17 | 194 |
2 | 34,800 | 17,500 | 0 | 10 | 33 | 37 | 242 |
3 | 27,800 | 18,600 | 0 | 3 | 7 | 9 | 100 |
4 | 29,200 | 1,100 | 0 | 4 | 6 | 10 | 60 |
5 | 16,600 | 16,100 | 0 | 0 | 1 | 5 | 48 |
6 | 33,300 | 13,200 | 0 | 14 | 30 | 23 | 248 |
7 | 20,300 | 17,600 | 0 | 0 | 1 | 3 | 25 |
8 | 30,800 | 18,500 | 0 | 16 | 21 | 29 | 381 |
9 | 37,500 | 17,400 | 0 | 14 | 15 | 20 | 165 |
10 | 13,100 | 12,700 | 0 | 0 | 1 | 9 | 40 |
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