
Total Traffic Volume & Performance in Penobscot County, Maine
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day5,025 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 9.6% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 32.4 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. | 15.9% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 48.1 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $71,655 |
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The average monitored road in Penobscot County, Maine carries 5,025 vehicles per day. Across its 1,058 miles of monitored roads, that adds up to 3,894,050 vehicle-miles traveled per day (≈1.4 billion per year). About 1 in 10 vehicles is a truck, in line with Maine (8.7%).
The shortest trips of any county in Maine
The average road in Penobscot carries 5,025 vehicles per day, essentially matching the state average of 4,836. In total volume terms, its road network carries about 12% of Maine's statewide total of vehicle-miles. 73% of counties in Maine see less traffic than Penobscot's 5,025 vehicles per day.
The average trip takes 32.4 minutes, 6% lower than the state level. At 32.4 minutes, Penobscot also has the lowest average travel time in Maine.
Congestion is somewhat higher than the state level, at a ratio of 15.9% (9% higher).
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Penobscot County, Maine
| Traffic | vehicles per day8,803 |
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| Trucks | 13.0% |
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| Average travel time | 38.4 min |
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| Congestion ratio | 22.7% |
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| Drivers’ average age | 49.0 yrs |
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| Drivers’ average income | $75,387 |
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Travel in Penobscot County, Maine splits roughly evenly, with about half of it (45% of vehicle-miles) on highways. The average highway carries 8,803 vehicles per day, 89% more than the average non-highway road in the same area, which carries 4,653 vehicles per day.
Highways make up 26% of the monitored road miles (272 miles, 796 segments), so they carry more than their share: 1,768,575 vehicle-miles traveled per day (≈646 million per year).
No more than 2 other counties in Maine move more traffic on their highways.
Higher highway truck share than 71% of counties in Maine
At 13.0%, highway truck share is 5% higher than the state average. The highway traffic mix is typical for Maine: neither freight- nor commuter-dominated.
By truck concentration, highways here outrank 71% of counties in Maine. Penobscot's highway truck count is higher than 57% of counties in Maine, at roughly 1,146 trucks per day.

Non-highway Traffic in Penobscot County, Maine
| Traffic | vehicles per day4,653 |
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| Trucks | 6.8% |
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| Average travel time | 31.9 min |
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| Congestion ratio | 15.2% |
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| Drivers’ average age | 47.7 yrs |
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| Drivers’ average income | $69,404 |
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Travel in Penobscot County, Maine splits roughly evenly, with about half of it (55% of vehicle-miles) on local roads. A typical local road sees 4,653 vehicles per day.
Spread over 787 miles and 8,092 segments, 74% of the road network, local roads carry a lighter load per mile: 2,125,475 vehicle-miles traveled per day (≈776 million per year). About 1 in 15 vehicles on non-highway roads is a truck (6.8%).
Younger drivers than 93% of counties in Maine
Non-highway roads carry a truck concentration that's 48% lower than the highway network.
Non-highway congestion (15.2%) runs slightly higher than the state level (9% higher).
Penobscot's average driver income is higher than 60% of counties in Maine. Penobscot's median driver age is lower than 93% of counties in Maine.