Use Numetric’s built-in FHWA formula reference guide to see information about the calculations used in our transportation Applications.

The following formulas are summarized in the Reference Guide:

  • Crash Ratio (Network Screening)
  • Crash Rate (Network Screening)
  • Crashes Per Mile (Network Screening)
  • Benefit (Safety Analysis)
  • Benefit Cost Ratio (Safety Analysis)
  • Unique Benefit (Safety Analysis)
  • Annual Crashes Reduced (Safety Analysis)
  • Annual Severe Crashes Reduced (Safety Analysis)

How to Access the Formula Reference Guide

To access the Formula Reference Guide, follow the steps outlined below:

1. Click on the Numetric Dropdown menu, located in the top left corner of the screen

2. Select Reference Guide from the dropdown list. 

A list of all available formulas will be displayed. Click on the name of a formula to learn more about how that formula is used in Numetric.

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