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A GIS-Based Index for Estimating Road Vulnerability

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A GIS-Based Index for Estimating Road Vulnerability to Damage from Overweight Vehicles Jeremy Scott Research Associate Institute for Transportation Research and Education Greg Ferrara Program Manager Institute for Transportation Research and Education
Introduction ,[object Object],[object Object],[object Object],[object Object]
Why Develop a Road Vulnerability Index (RVI)? ,[object Object],[object Object],[object Object]
RVI Model Development ,[object Object],[object Object],[object Object],[object Object]
Road Vulnerability Index RVI RTEI PCRI BSI Truck Count Truck Capacity Alligator Cracking Rutting Bridge Rating Bridge Distress Posted Weight GIS
Relative Truck Exposure Index (RTEI) ,[object Object]
Truck Count ,[object Object],[object Object],[object Object],[object Object]
Truck Count ,[object Object],[object Object],[object Object],[object Object],[object Object]
Truck Capacity ,[object Object],[object Object],[object Object]
Truck Capacity ,[object Object],[object Object],[object Object]
Relative Truck Exposure Index (RTEI) ,[object Object],[object Object]
Relative Truck Exposure Index (RTEI)
Pavement Condition Rating Index (PCRI) ,[object Object],[object Object],[object Object]
Alligator Cracking ,[object Object],Source: NCDOT
Alligator Cracking ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Rutting ,[object Object],Source: NCDOT
Rutting ,[object Object],[object Object],Rutting Code Score None (N) 100 Low (L) 90 Moderate (M) 40 Severe (S) 0
Pavement Condition Rating Index (PCRI) ,[object Object],[object Object],[object Object]
Pavement Condition Rating Index (PCRI)
Bridge Severity Index (BSI) ,[object Object],[object Object],[object Object],[object Object],[object Object]
Bridge Distress ( D j ) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Posted Weight ( W j ) ,[object Object],[object Object],[object Object],[object Object],[object Object]
Bridge Severity Index (BSI) ,[object Object],[object Object],[object Object]
Bridge Severity Index (BSI) ,[object Object],[object Object]
Bridge Severity Index (BSI)
Road Vulnerability Index RVI RTEI PCRI BSI Truck Count Truck Capacity Alligator Cracking Rutting Bridge Rating Bridge Distress Posted Weight GIS
RVI Integration ,[object Object],[object Object],[object Object]
Initial RVI
Baseline RVI ,[object Object],[object Object]
Baseline RVI ,[object Object],[object Object],[object Object],[object Object]
Baseline RVI
Sensitivity Analysis ,[object Object],[object Object],RTEI PCRI BSI RVI Percent Difference μ 91.52 89.92 89.06 90.22 μ [RTEI] + 5% 96.10 89.92 89.06 91.95 1.93% μ [PRCI] + 5% 91.52 94.42 89.06 91.37 1.28% μ [BSI] + 5% 91.52 89.92 93.51 91.83 1.79%
Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Questions? ,[object Object],[object Object]

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A GIS-Based Index for Estimating Road Vulnerability

Notes de l'éditeur

  1. Mean value of scaled RTEI is 91.53 with a standard deviation of 12.94
  2. Mean PCRI value is 89.92 with a standard deviation of 20.76
  3. Mean value of scaled BSI is 89.06 with a standard deviation of 12.40
  4. Mean value of initial RVI is 90.17 with a standard deviation of 9.05
  5. Mean value of Baseline RVI is 90.23 with a standard deviation of 8.51.