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TXDOT - Predictive Analysis Configuration

Lauren Miller avatar
Written by Lauren Miller
Updated over 3 months ago

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 Texas’s chosen predictive attributes used to generate Optimal Fit SPF groupings for segments:

Urban or Rural

  • Rural

  • Urban

Number of Lanes

  • 1-Lane

  • 2-Lane

  • 3-Lane

  • 4-Lane

  • 5-Lane

  • 6-Lane

  • 7-Lane

  • 8-Lane

  • 9-Lane

  • 10-Lane

  • 11-Lane

  • 12-Lane

  • 13-Lane

  • 14-Lane

  • 15-Lane

  • 16-Lane

  • 17-Lane

Functional Class

  • Interstate

  • Local Road

  • Major Collector

  • Minor Arterial

  • Minor Collector

  • Other Freeway & Expressway

  • Other Principal Arterial

Requirements for Optimal Fit Creation

  • Minimum Crashes: 100

  • Minimum Segments: 50

Intersections: Predictive Attributes

The following outlines Tennessee’s chosen predictive attributes used to generate Optimal Fit SPF groupings for intersections:

Urban or Rural

  • Rural

  • Urban

Intersection Legs

  • 2

  • 3

  • 4

  • 5

  • 6

  • 7

  • 8

  • 9

  • 10

  • 11

  • 12

  • 13

  • 14

  • 15

  • 16

  • 18

Functional Class (Highest & Lowest)

  • Local Road & Local Road

  • Major Collector & Local Road

  • Minor Arterial & Local Road

  • Other Principal Arterial & Local Road

  • Minor Collector & Local Road

  • Other Principal Arterial & Major Collector

  • Minor Arterial & Major Collector

  • Major Collector & Major Collector

  • Other Principal Arterial & Minor Arterial

  • Minor Arterial & Minor Arterial

  • Other Principal Arterial & Other Principal Arterial

  • Major Collector & Minor Collector

  • Other Principal Arterial & Minor Collector

  • Interstate & Major Collector

  • Minor Collector & Minor Collector

  • Minor Arterial & Minor Collector

  • Interstate & Local Road

  • Other Freeway & Expressway & Major Collector

  • Interstate & Other Principal Arterial

  • Other Freeway & Expressway & Local Road

  • Interstate & Interstate

  • Interstate & Minor Arterial

  • Other Freeway & Expressway & Other Principal Arterial

  • Other Freeway & Expressway & Minor Arterial

  • Other Freeway & Expressway & Other Freeway & Expressway

  • Interstate & Minor Collector

  • Interstate & Other Freeway & Expressway

  • Other Freeway & Expressway & Minor Collector

Requirements for Optimal Fit Creation

  • Minimum Crashes: 100

  • Minimum Segments: 50

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