CMF / CRF Details
CMF ID: 5622
Active work with no lane closure (compared to no work zone)
Description:
Prior Condition: Roadways with no workzone
Category: Work zone
Study: Estimating the Impact of Work Zones on Highway Safety, Ozturk et al., 2014
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 105 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 1.168 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.023 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | -16.8 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 2.3 |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | All |
| Street Type: | |
| Minimum Number of Lanes: | 2 |
| Maximum Number of Lanes: | 4 |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | |
| Minimum Speed Limit: | 35 |
| Maximum Speed Limit: | 65 |
| Speed Unit: | mph |
| Speed Limit Comment: | |
| Area Type: | All |
| Traffic Volume: | Minimum of 8396 to Maximum of 70447 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | 33974 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: | 2001 to 2011 |
| Municipality: | |
| State: | NJ |
| Country: | |
| Type of Methodology Used: | Regression cross-section |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Aug 12, 2014 |
| Comments: | CMF is based on the comparison of monthly crash counts between pre- and during work zone conditions |
