Task Order 5.2
Benefits Analysis for the Georgia Department of Transportation NaviGAtor Program
Final Report
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GDOT Project: NH-7713-00(010)
TMC Support
Prepared for:
Georgia Department of Transportation
Office of Traffic Operations
Wayne Shackelford Building
935 E. Confederate Avenue
Atlanta, GA 30316
Prepared by:
URS
Table of Contents
Executive Summary
1.0 Introduction
1.1 Background
1.2 Previous Benefits Documentation
1.3 Purpose of This Study
1.4 Documentation Review
1.5 Report Organization
2.0 Definition of Benefits
2.1 Benefits Identification
2.2 Benefits Definitions
2.3 Cost Savings
2.4 Benefits selection
3.0 Methodology
3.1 Mobility
3.1.1 Travel Delay
3.2 Customer Satisfaction
3.2.1 Surveys
3.3 Energy and Environmental
3.3.1 Reduced Emissions
3.3.2 Reduced Fuel Consumption
3.4 Cost Savings
3.4.1 Savings Due to Delay Reduction
3.4.2 Savings Due to Secondary Crash Reduction
3.4.3 Savings Due to Emissions Reduction
3.4.4 Savings Due to Reduction in Fuel Consumption
3.4.5 Savings Due to Motorist Assistance
4.0 Implementation Plan
4.1 Data description
4.2 Establishing Baseline Incident Cases
4.3 Demand Volume Estimation
4.3.1 Using Average Observed Throughput Volume to Estimate Demand Volume
4.4 Capacity Reduction
5.0 Results
5.1 Mobility
5.1.1 Average Incident Duration Reduction
5.1.2 Incident Delay Savings Total
5.2 Customer Satisfaction
5.2.1 Survey Results
5.3 Energy and Environmental
5.3.1 Reduced Emissions
5.3.2 Reduced Fuel Consumption
5.4 Cost Savings
5.4.1 Cost Savings Due to Delay Reduction
5.4.2 Cost Savings Due to Secondary Crash Reduction
5.4.3 Cost Savings Due to Emissions Reduction
5.4.4 Cost Savings Due to Reduction in Fuel Consumption
5.4.5 Cost Savings Due to Motorist Assistance
5.4.6 Total Cost Savings
Appendix A: Formula for Incident DELAY COMPUTATIONS
A.1 Total Delay and Time Delay in Queue for Incidents without Partial Clearance (Single Full Clearance)
A.2 Total Delay and Time Delay in Queue for Incidents with Intermediate Partial Clearance Leading to Reduction in the Number of Blocked Lanes
Appendix B: Reference Tables
B.1 Emissions Sensitivity Tables
B.2 Gasoline Prices (Fuel Costs) Table
Appendix C: Volume and Capacity Tables
