CMF / CRF Details
CMF ID: 10761
Convert diamond interchange to Diverging Diamond Interchange (DDI) or Double Crossover Diamond (DCD)
Description: Convert a diamond interchange to a Diverging Diamond Interchange (DDI) or a Double Crossover Diamond (DCD)
Prior Condition: No Prior Condition(s)
Category: Interchange design
Study: Systematic Safety Evaluation of Diverging Diamond Interchanges Based on Nationwide Implementation Data, Abdelrahman et al., 2021
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 130 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.858 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 14.2 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| 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: | Divided by Median |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Urban and suburban |
| Traffic Volume: | Minimum of 1295 to Maximum of 76100 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | 21224 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 | |
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| Date Range of Data Used: | |
| Municipality: | |
| State: | CO,FL,GA,ID,IN,IA,KS,KY,MI,MN,MO,NV,NM,NY,NC,OH,OR,PA,TN,TX,UT,VA,WI,WY |
| Country: | |
| Type of Methodology Used: | |
| Other Details | |
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| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Jul 01, 2021 |
| Comments: | The AADT values mentioned are for the Arterials. |
