
Total Traffic Volume & Performance in Decatur County, Georgia
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day2,803 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 8.8% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 32.8 min |
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Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 9.3% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 48.0 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $55,486 |
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A typical monitored road in Decatur County, Georgia sees 2,803 vehicles per day, while its 442 miles of monitored roads together handle 741,216 vehicle-miles traveled per day (≈271 million per year). Trucks are 8.8% of traffic, close to the 9.7% across Georgia.
Traffic 62% below the Georgia average
Decatur sees 62% lower average daily traffic volume than the state average (2,803 vehicles per day against 7,398), suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. In total volume terms, its road network carries about 0.3% of Georgia's statewide total of vehicle-miles. 63% of counties in Georgia see more traffic than Decatur's 2,803 vehicles per day.
At 32.8 minutes, the average travel time matches the state level closely. On travel time, Decatur runs shorter than 59% of counties in Georgia.
At 45% lower than the state level, the 9.3% congestion ratio signals smoother traffic flow - travel times are easy to plan around for scheduled deliveries.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Decatur County, Georgia
| Traffic | vehicles per day4,224 |
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| Trucks | 11.1% |
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| Average travel time | 36.8 min |
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| Congestion ratio | 8.5% |
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| Drivers’ average age | 48.4 yrs |
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| Drivers’ average income | $55,915 |
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Highways carry about half of all travel in Decatur County, Georgia, 49% of vehicle-miles. The average highway carries 4,224 vehicles per day, 90% more than the average non-highway road in the same area, which carries 2,224 vehicles per day.
With 25% of the road miles (109 miles in 838 segments), highways punch above their length, carrying 364,400 vehicle-miles traveled per day (≈133 million per year).
Fewer highway trucks than 88% of counties in Georgia
The concentration of trucks on highways (11.1%) is 18% lower than the state average for similar road classifications. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
By truck concentration, highways here trail 64% of counties in Georgia. Decatur's highway truck count is lower than 88% of counties in Georgia, at roughly 469 trucks per day.

Non-highway Traffic in Decatur County, Georgia
| Traffic | vehicles per day2,224 |
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| Trucks | 6.7% |
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| Average travel time | 31.1 min |
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| Congestion ratio | 9.6% |
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| Drivers’ average age | 47.3 yrs |
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| Drivers’ average income | $55,133 |
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Local roads carry about half of all travel in Decatur County, Georgia, 51% of vehicle-miles. On the average non-highway road, that comes to 2,224 vehicles per day.
Local roads make up 75% of the monitored road miles (333 miles in 2,055 segments) but carry less than their share of travel: 376,816 vehicle-miles traveled per day (≈138 million per year). About 1 in 15 vehicles on non-highway roads is a truck (6.7%).
Drivers from lower-income areas than 79% of counties in Georgia
The concentration of trucks on non-highway roads is 40% lower than on highways.
Non-highway congestion (9.6%) runs 40% lower than the state average, pointing to smoother local traffic flow.
Trip origins here have lower average income than 79% of counties in Georgia. 77% of counties in Georgia have a younger driver population than Decatur.