CMF / CRF Details
CMF ID: 10825
Install adaptive traffic signal control
Description: ATSC is a traffic management strategy in which traffic signal timings change, or adapt, based on observed traffic demand. These systems utilize increased detection to continually collect data on observed demand, and signal timings are then re-optimized based on current data.
Prior Condition: Signalized intersection
Category: Intersection traffic control
Study: Developing Crash Modification Factors for Adaptive Signal Control Technologies, Avelar et al., 2021
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 75 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 1.02 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | -2 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability | |
|---|---|
| Crash Type: | Rear end |
| Crash Severity: | All |
| Roadway Types: | Not specified |
| Street Type: | |
| Minimum Number of Lanes: | 2 |
| Maximum Number of Lanes: | 7 |
| 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: | All |
| 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 6140 to Maximum of 52723 Annual Average Daily Traffic (AADT) |
| Minor Road Traffic Volume: | Minimum of 329 to Maximum of 39755 Annual Average Daily Traffic (AADT) |
| Average Major Road Volume : | 29300 Annual Average Daily Traffic (AADT) |
| Average Minor Road Volume : | 6228 Annual Average Daily Traffic (AADT) |
| Development Details | |
|---|---|
| Date Range of Data Used: | 2006 to 2013 |
| Municipality: | |
| State: | VA |
| Country: | |
| Type of Methodology Used: | |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Aug 11, 2021 |
| Comments: | Applies to crashes at intersection. |
