
Total Traffic Volume & Performance in Prince William County, Virginia
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day7,987 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 7.5% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 30.4 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. | 19.0% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 43.5 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $148,629 |
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The average monitored road in Prince William County, Virginia carries 7,987 vehicles per day. Across its 792 miles of monitored roads, that adds up to 9,275,310 vehicle-miles traveled per day (≈3.4 billion per year). About 1 in 13 vehicles is a truck, fewer than the 1 in 10 across Virginia.
Busier roads than 79% of counties in Virginia
Prince William's average daily traffic volume is 49% higher than the state average - 7,987 vehicles per day against 5,349 - suggesting more traffic load per road - a busier backdrop for retail sites, at the cost of slower access. Across the whole network, that travel is about 4.2% of Virginia's statewide total. By volume, Prince William's 7,987 vehicles per day outpaces 79% of counties in Virginia.
The average trip takes 30.4 minutes, on par with the state level. On travel time, Prince William runs shorter than 72% of counties in Virginia.
The congestion ratio of 19.0% runs slightly higher than the state level (13% higher) - crucial for traffic control improvement and logistics planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Prince William County, Virginia
| Traffic | vehicles per day24,236 |
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| Trucks | 9.9% |
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| Average travel time | 39.7 min |
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| Congestion ratio | 39.8% |
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| Drivers’ average age | 43.6 yrs |
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| Drivers’ average income | $149,601 |
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A little more than half of the driving in Prince William County, Virginia happens on highways: 56% of all vehicle-miles. The average highway carries 24,236 vehicles per day, 300% more than the average non-highway road in the same area, which carries 6,060 vehicles per day.
Highways make up 25% of the monitored road miles (198 miles, 1,750 segments), so they carry more than their share: 5,161,499 vehicle-miles traveled per day (≈1.9 billion per year).
By highway travel volume, that ranks Prince William in the top 3 counties in Virginia.
More highway trucks than 67% of counties in Virginia
The concentration of trucks on highways (9.9%) is 25% 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.
63% of counties in Virginia see a higher highway truck share than Prince William's 9.9%. Prince William's highway truck count is higher than 67% of counties in Virginia, at roughly 2,395 trucks per day.

Non-highway Traffic in Prince William County, Virginia
| Traffic | vehicles per day6,060 |
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| Trucks | 4.6% |
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| Average travel time | 29.3 min |
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| Congestion ratio | 16.5% |
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| Drivers’ average age | 43.3 yrs |
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| Drivers’ average income | $147,756 |
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A significant share of driving in Prince William County, Virginia, 44% of vehicle-miles, happens on local roads. On the average non-highway road, that comes to 6,060 vehicles per day.
Spread over 594 miles and 14,762 segments, 75% of the road network, local roads carry a lighter load per mile: 4,113,811 vehicle-miles traveled per day (≈1.5 billion per year). About 1 in 22 vehicles on non-highway roads is a truck (4.6%).
Drivers from higher-income areas than 97% of counties in Virginia
Non-highway roads carry a truck concentration that's 54% lower than the highway network.
Non-highway congestion (16.5%) runs slightly higher than the state level (5% higher).
97% of counties in Virginia see lower average driver income among trip origins than Prince William. Prince William's median driver age is lower than 91% of counties in Virginia.