The Predictive Analysis application facilitates creating, managing, evaluating, and updating an agency’s Safety Performance Functions (SPFs) in an easily accessible interface.
Learn more about the Predictive Analysis application here.
Segments: Predictive Attributes
The following outlines Wisconsin’s chosen predictive attributes used to generate Optimal Fit SPF groupings for segments:
SPF Grouping
Local Road, Rural, 1-2 Lanes, 0-250 AADT
Local Road, Rural, 1-2 Lanes, 1,501-3,500 AADT
Local Road, Rural, 1-2 Lanes, 251-400 AADT
Local Road, Rural, 1-2 Lanes, 3,500+ AADT
Local Road, Rural, 1-2 Lanes, 401-750 AADT
Local Road, Rural, 1-2 Lanes, 751-1,500 AADT
Local Road, Rural, 3+ Lanes, Any Volume
Local Road, Rural, Data Error
Local Road, Urban, 1-2 Lanes, 0-250 AADT
Local Road, Urban, 1-2 Lanes, 1,501-3,500 AADT
Local Road, Urban, 1-2 Lanes, 251-400 AADT
Local Road, Urban, 1-2 Lanes, 3,501-7,000 AADT
Local Road, Urban, 1-2 Lanes, 401-750 AADT
Local Road, Urban, 1-2 Lanes, 7,000+ AADT
Local Road, Urban, 1-2 Lanes, 751-1,500 AADT
Local Road, Urban, 3+ Lanes, Any Volume
Local Road, Urban, Data Error
State Highway, All Area Types, Freeway, Divided, 1-2 Lanes, 501+ AADT
State Highway, All Area Types, Freeway, Undivided, 1+ Lanes, Any Volume
State Highway, All Area Types, Non-Freeway, Divided, 5+ Lanes, Any Volume
State Highway, Rural, Freeway, Data Error
State Highway, Rural, Freeway, Divided, 3-4 Lanes, 15,001-30,000 AADT
State Highway, Rural, Freeway, Divided, 3-4 Lanes, 30,001+ AADT
State Highway, Rural, Freeway, Divided, 3-4 Lanes, 501-15,000 AADT
State Highway, Rural, Freeway, Divided, 5+ Lanes, Any Volume
State Highway, Rural, Non-Freeway, Data Error
State Highway, Rural, Non-Freeway, Divided, 1-2 Lanes, Any Volume
State Highway, Rural, Non-Freeway, Divided, 3-4 Lanes, 0-10,000 AADT
State Highway, Rural, Non-Freeway, Divided, 3-4 Lanes, 10,001-17,500 AADT
State Highway, Rural, Non-Freeway, Divided, 3-4 Lanes, 17,501+ AADT
State Highway, Rural, Non-Freeway, TWLTL, 1+ Lanes, Any Volume
State Highway, Rural, Non-Freeway, Undivided, 1-2 Lanes, 0-1,500 AADT
State Highway, Rural, Non-Freeway, Undivided, 1-2 Lanes, 1,501-3,500 AADT
State Highway, Rural, Non-Freeway, Undivided, 1-2 Lanes, 3,501-7,000 AADT
State Highway, Rural, Non-Freeway, Undivided, 1-2 Lanes, 7,001+ AADT
State Highway, Rural, Non-Freeway, Undivided, 3+ Lanes, Any Volume
State Highway, Urban, Freeway, Data Error
State Highway, Urban, Freeway, Divided, 3-4 Lanes, 20,001-35,000 AADT
State Highway, Urban, Freeway, Divided, 3-4 Lanes, 35,001+ AADT
State Highway, Urban, Freeway, Divided, 3-4 Lanes, 501-20,000 AADT
State Highway, Urban, Freeway, Divided, 5-6 Lanes, Any Volume
State Highway, Urban, Freeway, Divided, 7+ Lanes, Any Volume
State Highway, Urban, Non-Freeway, Data Error
State Highway, Urban, Non-Freeway, Divided, 1-2 Lanes, Any Volume
State Highway, Urban, Non-Freeway, Divided, 3-4 Lanes, 0-8,000 AADT
State Highway, Urban, Non-Freeway, Divided, 3-4 Lanes, 17,501-24,000 AADT
State Highway, Urban, Non-Freeway, Divided, 3-4 Lanes, 24,001+ AADT
State Highway, Urban, Non-Freeway, Divided, 3-4 Lanes, 8,001-17,500 AADT
State Highway, Urban, Non-Freeway, TWLTL, 1+ Lanes, Any Volume
State Highway, Urban, Non-Freeway, Undivided, 1-2 Lanes, 0-4,500 AADT
State Highway, Urban, Non-Freeway, Undivided, 1-2 Lanes, 4,500-7,000 AADT
State Highway, Urban, Non-Freeway, Undivided, 1-2 Lanes, 7,001+ AADT
State Highway, Urban, Non-Freeway, Undivided, 3-4 Lanes, Any Volume
Crash Attributes
All Crashes
KABC
O
Requirements for Optimal Fit Creation
Minimum Crashes: 100
Minimum Segments: 50
Intersections: Predictive Attributes
The following outlines Wisconsin’s chosen predictive attributes used to generate Optimal Fit SPF groupings for intersections:
SPF Grouping
Non-Ramp Terminal, 2 or 3 Leg, Other Intersection
Non-Ramp Terminal, Rural, 3 Leg, Divided, TWSC Intersection
Non-Ramp Terminal, Rural, 3 Leg, Signalized Intersection
Non-Ramp Terminal, Rural, 3 Leg, Undivided, TWSC Intersection
Non-Ramp Terminal, Rural, 3 or 4 Leg, AWSC Intersection
Non-Ramp Terminal, Rural, 3 or 4 Leg, Multi-Lane Roundabout
Non-Ramp Terminal, Rural, 4 Leg, Divided, Signalized Intersection
Non-Ramp Terminal, Rural, 4 Leg, Divided, TWSC Intersection
Non-Ramp Terminal, Rural, 4 Leg, Undivided, Signalized Intersection
Non-Ramp Terminal, Rural, 4 Leg, Undivided, TWSC Intersection
Non-Ramp Terminal, Rural, 4 or 5 Leg, Other Intersection
Non-Ramp Terminal, Rural, 5 or 6 Leg, TWSC Intersection
Non-Ramp Terminal, Urban, 3 Leg, Divided, Signalized Intersection
Non-Ramp Terminal, Urban, 3 Leg, Divided, TWSC Intersection
Non-Ramp Terminal, Urban, 3 Leg, Undivided, Signalized Intersection
Non-Ramp Terminal, Urban, 3 Leg, Undivided, TWSC Intersection
Non-Ramp Terminal, Urban, 3 or 4 Leg, Multi-Lane Roundabout
Non-Ramp Terminal, Urban, 4 Leg, Divided, Signalized Intersection
Non-Ramp Terminal, Urban, 4 Leg, Other Intersection
Non-Ramp Terminal, Urban, 4 Leg, Undivided, TWSC Intersection
Non-Ramp Terminal, Urban, 5 or 6 Leg, TWSC Intersection
Ramp Terminal, Rural, 3 Leg, TWSC or Other Intersection
Ramp Terminal, Rural, 3 or 4 Leg, Signalized Intersection
Ramp Terminal, Rural, 4 Leg, Divided, TWSC or Other Intersection
Ramp Terminal, Rural, 4 or 5 Leg, Multi-Lane Roundabout
Ramp Terminal, Urban, 2 or 3 Leg, TWSC or Other Intersection
Ramp Terminal, Urban, 3 Leg, Signalized Intersection
Ramp Terminal, Urban, 4 Leg, Divided, Signalized Intersection
Ramp Terminal, Urban, 4 Leg, Undivided, Signalized Intersection
Ramp Terminal, Urban, 4 or 5 Leg, TWSC or Other Intersection
Ramp Terminal, Urban, 5 or 6 Leg, Signalized Intersection
Rural, 4 Leg, Single-Lane Roundabout
Terminal, Rural, 4 Leg, Undivided, TWSC Intersection
Unknown
Urban, 3, 4, or 5 Leg, AWSC Intersection
Urban, 3, 4, or 5 Leg, Single-Lane Roundabout
Crash Attributes
All Crashes
KABC
O
Requirements for Optimal Fit Creation
Minimum Crashes: 100
Minimum Segments: 50