CMF / CRF Details
CMF ID: 5233
Presence of three leg intersection vs. four leg intersection
Description:
Prior Condition: Four-leg intersection
Category: Intersection geometry
Study: Corridor-level signalized intersection safety analysis in Shanghai, China using Bayesian hierarchal models, Kun Xie, Xuesong Wang, Helai Huang, Xiahong Chen, 2013
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 80 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.75 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.13 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 25 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 12.8 |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | Not specified |
| 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: | |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Urban |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | Not specified |
| If countermeasure is intersection-based | |
| Intersection Type: | Roadway/roadway (not interchange related) |
| Intersection Geometry: | 3-leg,4-leg |
| Traffic Control: | Signalized |
| Major Road Traffic Volume: | Minimum of 7700 to Maximum of 140300 Average Daily Traffic (ADT) |
| Minor Road Traffic Volume: | |
| Average Major Road Volume : | 46200 Average Daily Traffic (ADT) |
| Average Minor Road Volume : | |
| Development Details | |
|---|---|
| Date Range of Data Used: | 2009 to 2009 |
| Municipality: | |
| State: | notusa |
| Country: | China |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (site-years): | 195 site-years |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Dec 02, 2013 |
| Comments: | Major Road ADT is total entering vehicles for the intersection |
