Study Details
Study Title: Safety Effects of Using Narrow Lanes and Shoulder-Use Lanes to Increase the Capacity of Urban Freeways
Authors: Bauer et al.
Publication Date: 2004
Abstract:
Study Citation: Bauer, K. M., Harwood, D. W., Hughes, W. E., and Richard, K. R., "Safety Effects of Using Narrow Lanes and Shoulder-Use Lanes to Increase the Capacity of Urban Freeways." Washington, D.C., 83rd Transportation Research Board Annual Meeting, (2004)
CMFs Associated With This Study
Category: Roadway
Countermeasure: Five to six lane conversion
| CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
|---|---|---|---|---|---|---|
| 1.03[B*] | -3 |  | All | All | Principal Arterial Other Freeways and Expressways | Urban |
| 1.04[B*] | -4 | | All | A,B,C,O | Principal Arterial Other Freeways and Expressways | Urban |
| 1.07[B*] | -7 | | All | K,A,B,C | Principal Arterial Other Freeways and Expressways | Urban |
Countermeasure: Four to five lane conversion
| CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
|---|---|---|---|---|---|---|
| 1.11[B] | -11 |  | All | All | Principal Arterial Other Freeways and Expressways | Urban |
| 1.1[B*] | -10 | | All | A,B,C,O | Principal Arterial Other Freeways and Expressways | Urban |
| 1.11[B] | -11 | | All | K,A,B,C | Principal Arterial Other Freeways and Expressways | Urban |
