
Total Traffic Volume & Performance in Knox County, Maine
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day4,191 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 7.0% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 33.2 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. | 12.5% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 53.9 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $70,269 |
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Our data shows 4,191 vehicles per day on the average road in Knox County, Maine, and 758,650 vehicle-miles traveled per day (≈277 million per year) across its 222 miles of monitored roads. About 1 in 14 vehicles is a truck, fewer than the 1 in 11 across Maine.
Shorter trips than 87% of counties in Maine
At 4,191 vehicles per day, the average road in Knox carries somewhat less traffic than the state average of 4,836 (13% less) - a factor worth weighing in site selection and logistics planning. Network-wide, Knox accounts for about 2.3% of Maine's statewide total of vehicle-miles. Knox carries more traffic than 60% of counties in Maine.
Journey times here (33.2 minutes on average) closely track the state level. Its average travel time of 33.2 minutes is shorter than 87% of counties in Maine.
The congestion ratio of 12.5% runs slightly lower than the state level (14% lower) - relevant for traffic control and delivery planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Knox County, Maine
| Traffic | vehicles per day10,232 |
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| Trucks | 7.4% |
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| Average travel time | 32.3 min |
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| Congestion ratio | 27.3% |
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| Drivers’ average age | 54.3 yrs |
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| Drivers’ average income | $68,906 |
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Highways carry a significant share of travel in Knox County, Maine: 31% of all vehicle-miles. The average highway carries 10,232 vehicles per day, 267% more than the average non-highway road in the same area, which carries 2,789 vehicles per day.
Yet highways are only 10% of the road network, 23 miles in 583 segments, so each mile of them is 3.0 times as busy as the average road mile.
The lowest highway truck share of any county in Maine
Highway truck concentration here runs 40% lower than the state average, at 7.4%. Highways here carry mainly commuter and local trips, with little through freight.
Knox also posts the lowest highway truck share in Maine - 7.4%. 57% of counties in Maine see more highway trucks per day than Knox's roughly 753.

Non-highway Traffic in Knox County, Maine
| Traffic | vehicles per day2,789 |
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| Trucks | 6.8% |
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| Average travel time | 33.4 min |
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| Congestion ratio | 9.1% |
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| Drivers’ average age | 53.1 yrs |
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| Drivers’ average income | $71,191 |
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A little more than half of the driving in Knox County, Maine happens on local roads: 69% of all vehicle-miles. The average non-highway road carries 2,789 vehicles per day.
Spread over 199 miles and 2,512 segments, 90% of the road network, local roads carry a lighter load per mile: 520,190 vehicle-miles traveled per day (≈190 million per year). About 1 in 15 vehicles on non-highway roads is a truck (6.8%).
Older drivers than 73% of counties in Maine
Non-highway roads carry a truck concentration that's 7% lower than the highway network.
At 35% lower than the state level, the non-highway congestion ratio of 9.1% signals easier movement on local roads.
53% of counties in Maine see lower average driver income among trip origins than Knox. 73% of counties in Maine have a younger driver population than Knox.