State Highway Reliability Report - Georgia
In the line graphs below, FHWA has shifted the "Year" label in the x-axis back by one year, from Data Reporting Year to Data Collection Year. More information
The information displayed is provided by the State in their 2018 Baseline Performance Period Report (BPP) and has not been edited by FHWA. Any questions about individual State reports should be directed to the respective State DOT
Please note: FHWA posted baseline data from State BPP reports to help bring context to their performance targets. This data may result in some discrepancies among published DOT performance data due to data sources and reporting years used when establishing the performance targets.
Interstate Highway Reliable Person-Miles Traveled
-
-
Baseline
80.2%
Reliable Person-Miles Traveled
Interstate Highways
-
Trend through 2021
Desired trend: ↑
Georgia % of Interstate Highway Reliable Person-Miles Traveled
-
Target
4-Year Target
67.0%
Reliable Person-Miles Traveled
Interstate Highways
2-Year Target: 73.0%
-
-
Basis for Interstate Highway Reliable Person-Miles Traveled:
Using the monthly interstate reliability measures from January 2016 to December 2017, a linear trend line analysis was conducted. Adopting a conservative approach, the lower end of the projected 2-year and 4-year range is selected as targets for this measure.A detailed report was prepared by Georgia Department of Transportation (GDOT) that provides an overview of the “National Performance Management Measures for Assessing Performance of the National Highway System, Freight Movement on the Interstate System, and Congestion Mitigation and Air Quality Improvement Program (CMAQ) Final Rule”, the methodology to calculate the measures included in the rule, target setting process as well as the recommended 2 and 4-year performance targets.
This report is uploaded in the “Attachment” tab for FHWA’s reference.
Data: 2018 Georgia Biennial Performance Report
Non-Interstate National Highway System (NHS) Reliable Person-Miles Traveled
-
-
Baseline*
N/A
Reliable Person-Miles Traveled
Non-Interstate NHS
-
Trend through 2021
Desired trend: ↑
Georgia % of Non-Interstate NHS reliable Person-Miles Traveled
-
Target
4-Year Target
81.0%
Reliable Person-Miles Traveled
Non-Interstate NHS
2-Year Target: N/A *
-
-
*Behind the data: For the first performance period only, baseline condition and 2-year targets are not required for the Non-Interstate NHS reliability measure.
-
Basis for Non-Interstate National Highway System (NHS) Reliable Person-Miles Traveled:
This target was based on a review of the Highway Performance Monitoring System (HPMS) data with a comparison to current and historical funding levels. Historically, Georgia DOT (GDOT) has used its Computerized Pavement Condition Evaluation System (CoPACES) to perform pavement condition assessment. CoPACES is an annual visual inspection that identifies pavement distresses that the Department has used successfully for over thirty (30) years. The CoPACES inspection assists with route selection for rehabilitation and preservation treatments, and is performed on a sample of the network.In 2018, GDOT moved to a fully automated process with 3D detection and evaluation. This process will not only provide a comprehensive analysis of the Department’s network, but will also accomplish this work much more safely, as the visual inspection required by the legacy CoPACES will no longer be necessary. The data collected by this automated system includes additional information, such as transverse profile, rutting, faulting, cracking, and International Roughness Index (IRI). It is expected that pavement scores will change with the move to automated data collection.
A conservative target was selected to account for this variability in pavement scores, for predicted trends in the network with current funding, and for the uncertainty in the current TAMP process and how it might be managed by FHWA.
Data: 2018 Georgia Biennial Performance Report
Interstate Highway Truck Travel Time Reliability (TTTR) Index
-
-
Baseline
1.44
Truck Travel Time Reliability Index
Interstate Highways
-
Trend through 2021
Desired trend: ↓
Georgia Truck Travel Time Reliability Index
-
Target
4-Year Target
1.78
Truck Travel Time Reliability Index
Interstate Highways
2-Year Target: 1.66
-
-
Basis for Interstate Highway Truck Travel Time Reliability:
Using the monthly truck reliability measures from January 2016 to December 2017, a linear trend line analysis was conducted. Adopting a conservative approach, the lower end of the projected 2-year and 4-year range is selected as the targets for this measure.A detailed report was prepared by Georgia Department of Transportation (GDOT) that provides an overview of the “National Performance Management Measures for Assessing Performance of the National Highway System, Freight Movement on the Interstate System, and Congestion Mitigation and Air Quality Improvement Program (CMAQ) Final Rule”, the methodology to calculate the measures included in the rule, target setting process as well as the recommended 2 and 4-year performance targets.
This report is uploaded in the “Attachment” tab for FHWA’s reference.
Data: 2018 Georgia Biennial Performance Report