CMF / CRF Details
CMF ID: 9684
Install shoulder rumble strips
Description:
Prior Condition: No Prior Condition(s)
Category: Shoulder treatments
Study: Estimating Crash Modification Factors for Lane Departure Countermeasures in Kansas, Dissanayake and Galgamuwa, 2017
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 60 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.91 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.049 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 9 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 4.9 |
| Applicability | |
|---|---|
| Crash Type: | Run off road |
| Crash Severity: | All |
| Roadway Types: | Not specified |
| Street Type: | |
| Minimum Number of Lanes: | 4 |
| Maximum Number of Lanes: | 4 |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | Divided by Median |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | All |
| Traffic Volume: | Minimum of 570 to Maximum of 80400 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | 15258 Annual Average Daily Traffic (AADT) |
| Time of Day: | All |
| If countermeasure is intersection-based | |
| Intersection Type: | |
| Intersection Geometry: | |
| Traffic Control: | |
| Major Road Traffic Volume: | |
| Minor Road Traffic Volume: | |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details | |
|---|---|
| Date Range of Data Used: | 2009 to 2014 |
| Municipality: | |
| State: | KS |
| Country: | USA |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (sites): | 12065 sites |
| Sample Size (miles): | 2316 miles |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Oct 27, 2018 |
| Comments: | CMF for tangent segments with paved shoulders>=2ft |
