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 North Dakota’s chosen predictive attributes used to generate Optimal Fit SPF groupings for segments:
Urban/Rural
Rural
Urban
Functional Class
Interstate
Local
Major Collector
Minor Arterial
Other Principal Arterial
Through Lanes
2
3
4
5
6
8
9
Requirements for Optimal Fit Creation
Minimum Crashes: 100
Minimum Segments: 20
Intersections: Predictive Attributes
The following outlines North Dakota’s chosen predictive attributes used to generate Optimal Fit SPF groupings for intersections:
Highest Functional Class
Principle Arterial - Other
Minor Arterial
Interstate
Major Collector
Intersection Control Type
TWSC
Signal
Roundabout
AWSC
Leg Ownership
State Highway Agency
City or Municipal Highway Agency
Town or Township Highway Agency
County Highway Agency
# of Legs
2
3
4
5
Requirements for Optimal Fit Creation
Minimum Crashes: 100
Minimum Intersections: 20