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, City or Village Street, 1-2 Lanes
Local Road, Urban, City or Village Street, 1-2 Lanes
Local Road, All Area Types, City or Village Street, 3+ Lanes
Local Road, Rural, City or Village Street, Data Error
Local Road, Urban, City or Village Street, Data Error
Local Road, Rural, County Trunk Highway, 1-2 Lanes
Local Road, Urban, County Trunk Highway, 1-2 Lanes
Local Road, All Area Types, County Trunk Highway, 3+ Lanes
Local Road, Rural, County Trunk Highway, Data Error
Local Road, Urban, County Trunk Highway, Data Error
Local Road, Rural, Town or Other Road, 1-2 Lanes
Local Road, Urban, Town or Other Road, 1-2 Lanes
Local Road, All Area Types, Town or Other Road, 3+ Lanes
Local Road, Rural, Town or Other Road, Data Error
Local Road, Urban, Town or Other Road, 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
Local Road, All Area Types, Any Ramp Type, Any Legs, TWSC or Other Intersection
Local Road, All Area Types, Any Ramp Type, Any Legs, Signalized Intersection
Local Road, All Area Types, Any Ramp Type, Any Legs, Roundabout Intersection
Local Roadway, Data Error
State Highway, Data Error
State Highway, All Area Types, Any Ramp Type, Any Legs, Other Control
State Highway, All Area Types, Any Ramp Type, Any Legs, Roadside Facility
State Highway, All Area Types, Any Ramp Type, RCUT Intersection
State Highway, Rural, Non-Ramp Terminal, 3 Leg, TWSC Intersection
State Highway, Rural, Non-Ramp Terminal, 4 Leg, TWSC Intersection
State Highway, Rural, Ramp Terminal, 3 Leg, TWSC Intersection
State Highway, Rural, Ramp Terminal, 4 Leg, TWSC Intersection
State Highway, All Area Types, Non-Ramp Terminal, 5+ Legs, TWSC Intersection
State Highway, All Area Types, Any Ramp Type, 4 Leg, Multi-Way Stop Control
State Highway, Rural, Any Ramp Type, 3+ Legs, AWSC Intersection
State Highway, Rural, Any Ramp Type, 3+ Legs, Signalized Intersection
State Highway, Rural, Any Ramp Type, 3+ Legs, Single-lane Roundabout
State Highway, Rural, Any Ramp Type, 3+ Legs, Multi-lane Roundabout
State Highway, Urban, Non-Ramp Terminal, 3 Leg, TWSC Intersection
State Highway, Urban, Non-Ramp Terminal, 4 Leg, TWSC Intersection
State Highway, Urban, Ramp Terminal, 3 Leg, TWSC Intersection
State Highway, Urban, Ramp Terminal, 4 Leg, TWSC Intersection
State Highway, Urban, Any Ramp Type, 3+ Legs, AWSC Intersection
State Highway, Urban, Non-Ramp Terminal, 3 Leg, Signalized Intersection
State Highway, Urban, Non-Ramp Terminal, 4+ Legs, Signalized Intersection
State Highway, Urban, Ramp Terminal, 3 Leg, Signalized Intersection
State Highway, Urban, Ramp Terminal, 4+ Legs, Signalized Intersection
State Highway, Urban, Any Ramp Type, 3+ Legs, Single-lane Roundabout
State Highway, Urban, Any Ramp Type, 3+ Legs, Multi-lane Roundabout
Crash Attributes
All Crashes
KABC
O
Requirements for Optimal Fit Creation
Minimum Crashes: 100
Minimum Segments: 50