CMF / CRF Details
CMF ID: 1988
Improve pavement distress from PSI of X to Y
Description: Improve pavement distress, represented by present serviceability index (PSI).
Prior Condition: divided median interstate with ashphalt pavement
Category: Roadway
Study: Effects of Asphalt Pavement Conditions on Traffic Accidents in Tennessee Utilizing Pavement Management System, Chan et al., 2009
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 95 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: |  |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
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| Value: |  |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | Principal Arterial Interstate |
| Street Type: | |
| Minimum Number of Lanes: | |
| Maximum Number of Lanes: | |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | Divided by Median |
| Minimum Speed Limit: | 55 |
| Maximum Speed Limit: | 55 |
| Speed Unit: | mph |
| Speed Limit Comment: | |
| Area Type: | Urban |
| Traffic Volume: | Minimum of 19045 to Maximum of 166683 Average Daily Traffic (ADT) |
| Average Traffic Volume: | |
| Time of Day: | Night |
| 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: | 2006 to 2006 |
| Municipality: | Knoxville, Memphis, Nashville, Chattanooga |
| State: | TN |
| Country: | |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (miles): | 110 miles |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Dec 01, 2009 |
| Comments: | |
