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 Indiana’s chosen predictive attributes used to generate Optimal Fit SPF groupings for segments:
Attribute
Local-Owned/State-Owned
Locally Owned
State Owned
Urban/Rural
Urban
Rural
Number of Lanes
Two Lanes or Less
More Than Two Lanes
Freeway/Non-Freeway/Ramp
Freeway
Non-Freeway
Ramp
Interchange Sequence Number
Interchange Area
Non-Interchange Area
Requirements for Optimal Fit Creation
Minimum Crashes: 100
Minimum Segments: 50
Intersections: Predictive Attributes
The following outlines Indiana’s chosen predictive attributes used to generate Optimal Fit SPF groupings for intersections:
Attribute
Local-Owned/State-Owned
Locally Owned
State Owned
Urban/Rural
Urban
Rural
Number of Legs
3-Leg
4 or More Leg
Rural/Urban City Limits
Rural
Urban
Requirements for Optimal Fit Creation
Minimum Crashes: 100
Minimum Segments: 50