CMF / CRF Details
CMF ID: 2034
Install J-Turn intersection
Description: Install J-Turn intersection
Prior Condition: 4-lane, divided, rural principal arterial and undivided rural major collector; two-way stop controlled
Category: Intersection geometry
Study: The J-Turn Intersection: Design Guidance & Safety Experience, Hochstein et al., 2009
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 10 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 100 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | K (fatal) |
| Roadway Types: | Principal Arterial Other |
| 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: | 55 |
| Maximum Speed Limit: | 55 |
| Speed Unit: | mph |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | All |
| If countermeasure is intersection-based | |
| Intersection Type: | Roadway/roadway (not interchange related) |
| Intersection Geometry: | 4-leg |
| Traffic Control: | Stop-controlled |
| Major Road Traffic Volume: | Minimum of 10670 to Maximum of 11240 Average Daily Traffic (ADT) |
| Minor Road Traffic Volume: | Minimum of 1450 to Maximum of 1700 Average Daily Traffic (ADT) |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details | |
|---|---|
| Date Range of Data Used: | 1997 to 2006 |
| Municipality: | |
| State: | MD |
| Country: | |
| Type of Methodology Used: | Simple before/after |
| Sample Size (sites): | 1 sites after |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Dec 01, 2009 |
| Comments: | |
