Crash Query
The following formulas are used in the Crash Query application. The table below defines the terms used in the formulas:
Comparison Report Percent Change (Annualized)
The expression used to determine the Annualized Percent Change in a comparison report is:
Crash Report Percentages
The expression used to determine the percentages in Crash Reports is:
Network ScreeningÂ
The following formulas are used in the Network Screening application. The table below defines the terms used in the formulas:
Crash Ratio
The expression used to determine the Crash Ratio on a segment of roadway is:
Crash Rate for Segments
The expression used to determine the Crash Rate on a segment of roadway is:
Crash Rate for Intersections
The expression used to determine the Crash Rate in an Intersection is:
Crashes Per Mile
The expression used to determine Crashes Per Mile on a segment of roadway is:
Expected Crash Rate
The Expected Crash Rate is the state-provided SPF.
Serious Rate
The expression used to determine the Serious Crash Rate on a segment of roadway is:
Fatal Rate
The expression used to determine the Fatal Crash Rate on a segment of roadway is:
Safety AnalysisÂ
The following formulas are used in the Safety Analysis application. The table below defines the terms used in the formulas:
Benefit
The expression to determine Benefit on a segment of roadway is:
Benefit Cost Ratio
The expression to determine Benefit Cost Ratio on a segment of roadway is:
Unique Benefit
The expression to determine Unique Benefit on a segment of roadway is:
Annual Crashes Reduced
The expression to determine Annual Crashes Reduced on a segment of roadway is:
Annual Severe Crashes Reduced
The expression to determine Annual Severe Crashes Reduced on a segment of roadway is:
