Study Details
Study Title: Signalized Intersections: Informational Guide
Authors: Rodegerdts et al.
Publication Date: 2004
Abstract:
Study Citation: Rodegerdts, L. A., Nevers, B., and Robinson, B., "Signalized Intersections: Informational Guide." FHWA-HRT-04-091, (2004)
CMFs Associated With This Study
Category: Access management
Countermeasure: Create directional median openings to allow left-turns and u-turns
| CMF |
CRF(%) |
Quality |
Crash Type |
Crash Severity |
Roadway Type |
Area Type |
|
0.49
|
51
|
|
All |
All |
Not specified |
|
Category:Bicyclists
Countermeasure: Provide bicycle box (advance stop bar to leave dedicated space for cyclists)
| CMF |
CRF(%) |
Quality |
Crash Type |
Crash Severity |
Roadway Type |
Area Type |
|
0.65
|
35
|
Cannot Be Rated
|
Vehicle/bicycle |
All |
Not specified |
|
Countermeasure: Provide bike lanes
| CMF |
CRF(%) |
Quality |
Crash Type |
Crash Severity |
Roadway Type |
Area Type |
|
0.65
|
35
|
|
Vehicle/bicycle |
K,A,B,C |
Not specified |
|
Category:Highway lighting
Countermeasure: Install lighting
| CMF |
CRF(%) |
Quality |
Crash Type |
Crash Severity |
Roadway Type |
Area Type |
|
0.7
|
30
|
Cannot Be Rated
|
All |
All |
Not specified |
|
Category:Intersection geometry
Countermeasure: Convert four-leg intersection into two three-leg intersections
| CMF |
CRF(%) |
Quality |
Crash Type |
Crash Severity |
Roadway Type |
Area Type |
|
0.43
|
57
|
|
All |
All |
Not specified |
All |
Countermeasure: Install left-turn lane (signal has left-turn phase)
| CMF |
CRF(%) |
Quality |
Crash Type |
Crash Severity |
Roadway Type |
Area Type |
|
0.65
|
35
|
|
All |
All |
Not specified |
|
Countermeasure: Install right-turn lane
| CMF |
CRF(%) |
Quality |
Crash Type |
Crash Severity |
Roadway Type |
Area Type |
|
0.6
|
40
|
Cannot Be Rated
|
All |
K,A,B,C |
Not specified |
All |
Category:Intersection traffic control
Countermeasure: Convert signal from pedestal-mounted to mast arm
| CMF |
CRF(%) |
Quality |
Crash Type |
Crash Severity |
Roadway Type |
Area Type |
|
0.51
|
49
|
|
All |
All |
Not specified |
|
|
0.56
|
44
|
|
All |
K,A,B,C |
Not specified |
All |
|
0.49
|
51
|
|
All |
O |
Not specified |
All |
|
0.88
|
12
|
|
Angle |
All |
Not specified |
All |
|
0.59
|
41
|
|
Rear end |
All |
Not specified |
All |
|
0.26
|
74
|
|
Angle |
All |
Not specified |
All |
Countermeasure: Install emergency vehicle pre-emption systems
| CMF |
CRF(%) |
Quality |
Crash Type |
Crash Severity |
Roadway Type |
Area Type |
|
0.3
|
70
|
Cannot Be Rated
|
Not specified |
All |
Not specified |
|
Countermeasure: Provide overhead lane-use signs
| CMF |
CRF(%) |
Quality |
Crash Type |
Crash Severity |
Roadway Type |
Area Type |
|
0.9
|
10
|
Cannot Be Rated
|
Rear end |
All |
Not specified |
|
Category:Roadside
Countermeasure: Increase triangle sight distance
| CMF |
CRF(%) |
Quality |
Crash Type |
Crash Severity |
Roadway Type |
Area Type |
|
0.44
|
56
|
|
All |
K |
Not specified |
|
|
0.63
|
37
|
|
All |
A,B,C |
Not specified |
|
