Birmingham, AL Urbanized Area Congestion Report
In the line graphs below, FHWA uses Data Collection Year instead of Data Reporting Year to represent snapshot condition/performance at the time the data was collected. More information
The Birmingham, AL Urbanized Area covers parts of Alabama. Targets are agreed upon by several transportation agencies and apply to the entire area.
Annual Hours of Peak-Hour Excessive Delay (PHED) Per Capita
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Annual Hours of Peak-Hour Excessive Delay (PHED) Per Capita 2021 2022 2023 2024 2025 Condition/Performance 8.9 -- -- -- -- Targets -- -- 9.3 -- 9.3
Annual Hours of Peak-Hour Excessive Delay (PHED) Per Capita
- Basis for Targets
- 2-yr Progress
- Basis for 4-yr Target Adjustment
- 4-yr Planned Activities
- 4-yr Progress
(Alabama) Two- and four-year targets are established in coordination between the Regional Planning Council of Greater Birmingham (RPCGB) and the Alabama Department of Transportations. Targets are based on a combination of trend line analysis of historic PHED values, a benchmarking analysis against PHED values reported for peer cities, and local knowledge of the Birmingham area, its road network, and anticipated changes in future congestion levels due to system enhancements and construction projects. Historic PHED values were calculated for 2017 through 2021 using NPMRDS data and traffic volume profile and speed limit data provided by RPCGB. An afternoon peak period of 3 – 7 pm was used to calculate PHED values, corresponding the time period of greatest congestion. Collaboration meetings were held with ALDOT staff, RPCGB, and ALDOT’s consultant services. Data was presented along with historical trends. The 2- and 4-year targets were finalized and will be presented to the MPO Committees. Target levels are set to balance realistic expectations of future performance (anticipating a gradual return to pre-pandemic traffic patterns) and anticipated impacts of future system enhancements.
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Data Sources:
Alabama 2022 Biennial Performance Report
Alabama 2022 HPMS Data Submittal
Non-Single Occupancy Vehicle (Non-SOV) Travel
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Non-Single Occupancy Vehicle (Non-SOV) Travel 2021 2022 2023 2024 2025 Condition/Performance 18.1 -- -- -- -- Targets -- -- 16.5 -- 16.5
Non-Single Occupancy Vehicle (Non-SOV) Travel
- Basis for Targets
- 2-yr Progress
- Basis for 4-yr Target Adjustment
- 4-yr Planned Activities
- 4-yr Progress
(Alabama) Historic Percent Non-Single Occupancy Vehicle scores were calculated for 2014 through 2020 based on the methodology provided by FHWA in their May 2018 “Computation Procedure for Travel Time Based and Percent Non-Single Occupancy Vehicle (non-SOV) Travel Performance Measures” (HIF-18-024) guidance. A trendline forecast was produced based on the trend observed since 2014. Collaboration meetings were held with ALDOT staff, RPCGB, and ALDOT’s consultant services. Data was presented along with historical trends. The 2- and 4-year targets were finalized and will be presented to the MPO Committees. Targets are set based on balancing the trendline forecast with expectations of future travel patterns gradually returning to a pre-pandemic trend.
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Data Sources:
Alabama 2022 Biennial Performance Report
Alabama 2022 HPMS Data Submittal