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 GDOT’s chosen predictive attributes used to generate Optimal Fit SPF groupings for segments:
Urban/Rural
Atlanta Urbanized Area
Non-City / Non-incorporated Area
Other Urbanized Area
Rural City
Number of Lanes
1, 2, or 3 Lanes
4 Lanes
5 or 6 Lanes
7 or More Lanes
Functional Class
City Street
Collector Distributor & Ramps
Controlled Access
Public & County
State Mainline
Short Segment (<0.25 Miles)
Yes
No
Crash Attributes
All Crashes
KAB Crashes
CO Crashes
VRU Crashes
Requirements for Optimal Fit Creation
Minimum Crashes: 100
Minimum Segments: 50