CMF / CRF Details
CMF ID: 8463
Install an intersection conflict warning system (ICWS) with post mounted signs (various messages) and flashers in advance of the intersection on major; loop on minor
Description: Install an intersection conflict warning system (ICWS) with post mounted signs (various messages) and flashers in advance of the intersection on major; loop on minor
Prior Condition: No intersection conflict warning systems
Category: Signs
| Crash Modification Factor (CMF) |
| Value: |
0.45
|
| Adjusted Standard Error: |
|
| Unadjusted Standard Error: |
0.069 |
| Crash Reduction Factor (CRF) |
| Value: |
55 (This value indicates a decrease in crashes)
|
| Adjusted Standard Error: |
|
| Unadjusted Standard Error: |
6.9 |
| Applicability |
| Crash Type: |
All |
| Crash Severity: |
K (fatal),A (serious injury),B (minor injury),C (possible injury) |
| Roadway Types: |
Not specified |
| Number of Lanes: |
2 |
| Road Division Type: |
|
| Speed Limit: |
|
| Area Type: |
Rural |
| Traffic Volume: |
|
| Time of Day: |
Not specified |
| If countermeasure is intersection-based |
| Intersection Type: |
Roadway/roadway (not interchange related) |
| Intersection Geometry: |
4-leg |
| Traffic Control: |
Stop-controlled |
| Major Road Traffic Volume: |
|
| Minor Road Traffic Volume: |
|
| Development Details |
| Date Range of Data Used: |
|
| Municipality: |
|
| State: |
MN, MO, NC |
| Country: |
|
| Type of Methodology Used: |
Before/after using empirical Bayes or full Bayes |
| Sample Size (crashes): |
58 crashes after
|
| Sample Size (sites): |
14 sites before, 14 sites after
|
| Other Details |
| Included in Highway Safety Manual? |
No |
| Date Added to Clearinghouse: |
Jan-17-2017 |
| Comments: |
CMF for 2-lane at 2-lane intersections |
[View score details]
