
Total Traffic Volume & Performance in Glynn County, Georgia
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day6,832 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 10.2% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 30.8 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. | 15.0% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 50.2 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $75,703 |
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The average monitored road in Glynn County, Georgia carries 6,832 vehicles per day. Across its 334 miles of monitored roads, that adds up to 2,599,330 vehicle-miles traveled per day (≈949 million per year). Trucks are 10.2% of traffic, close to the 9.7% across Georgia.
Shorter trips than 85% of counties in Georgia
Glynn's average daily traffic volume is 8% lower than the state average - 6,832 vehicles per day against 7,398. Across the whole network, that travel is about 0.9% of Georgia's statewide total. Glynn carries more traffic than 82% of counties in Georgia.
Journey times run 8% lower than the state level, at 30.8 minutes on average. 85% of counties in Georgia have a longer average travel time than Glynn's 30.8 minutes.
The congestion ratio of 15.0% runs slightly lower than the state level (11% lower) - relevant for traffic control and delivery planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Glynn County, Georgia
| Traffic | vehicles per day11,508 |
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| Trucks | 14.8% |
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| Average travel time | 35.7 min |
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| Congestion ratio | 18.0% |
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| Drivers’ average age | 49.3 yrs |
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| Drivers’ average income | $72,224 |
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Highways carry about half of all travel in Glynn County, Georgia, 55% of vehicle-miles. The average highway carries 11,508 vehicles per day, 90% more than the average non-highway road in the same area, which carries 6,043 vehicles per day.
Highways make up 34% of the monitored road miles (115 miles, 702 segments), so they carry more than their share: 1,416,875 vehicle-miles traveled per day (≈517 million per year).
By highway travel volume, Glynn outranks 84% of counties in Georgia.
Higher highway truck share than 66% of counties in Georgia
Highway truck concentration here runs 9% higher than the state average, at 14.8%. The highway traffic mix is typical for Georgia: neither freight- nor commuter-dominated.
By truck concentration, highways here outrank 66% of counties in Georgia. 64% of counties in Georgia see fewer highway trucks per day than Glynn's roughly 1,707.

Non-highway Traffic in Glynn County, Georgia
| Traffic | vehicles per day6,043 |
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| Trucks | 4.7% |
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| Average travel time | 30.0 min |
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| Congestion ratio | 14.4% |
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| Drivers’ average age | 50.8 yrs |
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| Drivers’ average income | $77,742 |
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Local roads carry about half of all travel in Glynn County, Georgia, 45% of vehicle-miles. On the average non-highway road, that comes to 6,043 vehicles per day.
Spread over 219 miles and 4,158 segments, 66% of the road network, local roads carry a lighter load per mile: 1,182,455 vehicle-miles traveled per day (≈432 million per year). About 1 in 21 vehicles on non-highway roads is a truck (4.7%).
Older drivers than 90% of counties in Georgia
The concentration of trucks on non-highway roads is 68% lower than on highways.
Non-highway congestion (14.4%) runs slightly lower than the state level (11% lower).
Glynn's average driver income is higher than 77% of counties in Georgia. 90% of counties in Georgia have a younger driver population than Glynn.