
Total Traffic Volume & Performance in Knox County, Tennessee
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day10,860 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 9.8% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 31.9 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. | 22.1% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 45.9 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $83,726 |
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The average monitored road in Knox County, Tennessee carries 10,860 vehicles per day. Across its 843 miles of monitored roads, that adds up to 12,073,911 vehicle-miles traveled per day (≈4.4 billion per year). About 1 in 10 vehicles is a truck, in line with Tennessee (11.3%).
Busier roads than 98% of counties in Tennessee
Knox sees 50% higher average daily traffic volume than the state average (10,860 vehicles per day against 7,251), suggesting more demand on each road - a busier backdrop for retail sites, at the cost of slower access. In total volume terms, its road network carries about 6.7% of Tennessee's statewide total of vehicle-miles. 98% of counties in Tennessee see less traffic than Knox's 10,860 vehicles per day.
At 31.9 minutes, the average travel time matches the state level closely. On travel time, Knox runs shorter than 63% of counties in Tennessee.
The congestion ratio of 22.1% is 37% higher, pointing to more pronounced congestion than the state level - a factor for delivery windows and signal timing.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Knox County, Tennessee
| Traffic | vehicles per day22,523 |
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| Trucks | 13.0% |
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| Average travel time | 40.9 min |
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| Congestion ratio | 31.4% |
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| Drivers’ average age | 46.6 yrs |
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| Drivers’ average income | $77,878 |
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Highways carry more than half of all travel in Knox County, Tennessee (62% of vehicle-miles). The average highway carries 22,523 vehicles per day, 139% more than the average non-highway road in the same area, which carries 9,429 vehicles per day.
Highways make up 30% of the monitored road miles (250 miles, 1,895 segments), so they carry more than their share: 7,427,910 vehicle-miles traveled per day (≈2.7 billion per year).
No more than 2 other counties in Tennessee move more traffic on their highways.
More highway trucks than 84% of counties in Tennessee
Highway truck concentration here runs 17% lower than the state average, at 13.0%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
53% of counties in Tennessee see a lower highway truck share than Knox's 13.0%. 84% of counties in Tennessee see fewer highway trucks per day than Knox's roughly 2,923.

Non-highway Traffic in Knox County, Tennessee
| Traffic | vehicles per day9,429 |
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| Trucks | 4.6% |
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| Average travel time | 30.8 min |
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| Congestion ratio | 20.9% |
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| Drivers’ average age | 45.1 yrs |
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| Drivers’ average income | $90,259 |
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A significant share of driving in Knox County, Tennessee, 38% of vehicle-miles, happens on local roads. A typical local road sees 9,429 vehicles per day.
Local roads make up 70% of the monitored road miles (593 miles in 15,433 segments) but carry less than their share of travel: 4,646,002 vehicle-miles traveled per day (≈1.7 billion per year). Trucks make up 4.6% of non-highway traffic, about 1 in 22 vehicles.
Drivers from higher-income areas than 93% of counties in Tennessee
Compared to highways, non-highway routes see 65% fewer trucks by share.
Non-highway congestion (20.9%) runs 36% higher than the state average, pointing to slower local traffic flow.
93% of counties in Tennessee see lower average driver income among trip origins than Knox. Knox's median driver age is lower than 83% of counties in Tennessee.