CMF / CRF Details
CMF ID: 4657
Install bicycle lanes
Description:
Prior Condition: No bicycle lane along the roadway segment.
Category: Bicyclists
Study: Evaluating the Safety Effects of Bicycle Lanes in New York City, Chen et al., 2012
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 90 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.44 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.128 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 56 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 12.8 |
| Applicability | |
|---|---|
| Crash Type: | Multiple vehicle |
| Crash Severity: | All |
| Roadway Types: | Not specified |
| Street Type: | |
| Minimum Number of Lanes: | 1 |
| Maximum Number of Lanes: | |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | 1 - 5+ Lanes |
| Crash Weather: | Not specified |
| Road Division Type: | All |
| 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: | |
| 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: | 1991 to 2008 |
| Municipality: | New York City |
| State: | NY |
| Country: | |
| Type of Methodology Used: | Before/after using comparison group |
| Sample Size (crashes): | 2070 crashes before, 504 crashes after |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | May 01, 2013 |
| Comments: | Crashes involving multiple vehicles but no pedestrians or bicyclists. |
