Study Details
Study Title: Low-Cost Safety Improvements Chapter 27, The Traffic Safety Toolbox: a primer on traffic safety
Authors: Polanis
Publication Date: 1999
Abstract: None.
Study Citation: Polanis, S. F., "Low-Cost Safety Improvements." Chapter 27, The Traffic Safety Toolbox: a primer on traffic safety, Washington, D.C., Institution of Transportation Engineers, (1999) pp. 265-272.
CMFs Associated With This Study
Category: Delineation
Countermeasure: Mark pavement with supplementary warning messages
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|---|---|---|---|---|---|
0.7 | 30 | Angle | All | Not specified | Urban |
Category:Intersection traffic control
Countermeasure: Add all-red clearance interval (from 0 to 1 second)
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|---|---|---|---|---|---|
1 | 0 | Angle | All | Not specified | Urban |
Countermeasure: Add centerline and STOP bar, replace 24-inch with 30-inch stop signs
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|---|---|---|---|---|---|
0.33 | 67 | Angle | All | Not specified | Urban |
Countermeasure: Convert minor-road stop control to all-way stop control
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|---|---|---|---|---|---|
0.2 | 80 | Angle | All | Not specified | Urban |
Countermeasure: Install double stop signs
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|---|---|---|---|---|---|
0.45 | 55 | Angle | All | Not specified | Urban |
Countermeasure: Install larger signal lenses (12 inch)
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|---|---|---|---|---|---|
0.54 | 46 | Angle | All | Not specified | Urban |
Countermeasure: Replace Night-Time Flash with Steady Operation
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|---|---|---|---|---|---|
0.25 | 75 | Angle | All | Not specified | Urban |
Category:Signs
Countermeasure: Install advance warning signs (positive guidance)
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|---|---|---|---|---|---|
0.65 | 35 | Angle | All | Not specified | Urban |