
Total Traffic Volume & Performance in Washington County, Maryland
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day4,572 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 13.9% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 33.9 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. | 16.0% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 47.8 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $82,744 |
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Our data shows 4,572 vehicles per day on the average road in Washington County, Maryland, and 4,960,209 vehicle-miles traveled per day (≈1.8 billion per year) across its 703 miles of monitored roads. About 1 in 7 vehicles is a truck, well above the 7.5% across Maryland - a freight-heavy mix.
Traffic 41% below the Maryland average
Washington's average daily traffic volume is 41% lower than the state average - 4,572 vehicles per day against 7,693 - suggesting less traffic load per road - less drive-by exposure for retail, but easier access for deliveries. Across the whole network, that travel is about 3.6% of Maryland's statewide total. By volume, Washington's 4,572 vehicles per day trails 61% of counties in Maryland.
The average trip takes 33.9 minutes, on par with the state level. Its average travel time of 33.9 minutes is longer than 61% of counties in Maryland.
Congestion runs 22% lower than the state level, at a ratio of 16.0%, which means smoother traffic flow - relevant for traffic control and delivery planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Washington County, Maryland
| Traffic | vehicles per day20,595 |
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| Trucks | 20.2% |
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| Average travel time | 45.8 min |
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| Congestion ratio | 42.4% |
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| Drivers’ average age | 48.0 yrs |
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| Drivers’ average income | $85,853 |
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Highways carry more than half of all travel in Washington County, Maryland (57% of vehicle-miles). The average highway carries 20,595 vehicles per day, 399% more than the average non-highway road in the same area, which carries 4,127 vehicles per day.
Yet highways are only 18% of the road network, 129 miles in 389 segments, so each mile of them is 3.1 times as busy as the average road mile.
65% of counties in Maryland move less traffic on their highways.
The highest highway truck share of any county in Maryland
The concentration of trucks on highways (20.2%) is 107% higher than the state average for similar road classifications. That marks Washington as a major freight corridor, where highway access is what logistics operators compete on.
Washington also posts the highest highway truck share in Maryland - 20.2%. By raw volume, Washington carries the highest number of highway trucks in Maryland - roughly 4,438 trucks per day.

Non-highway Traffic in Washington County, Maryland
| Traffic | vehicles per day4,127 |
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| Trucks | 5.5% |
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| Average travel time | 33.6 min |
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| Congestion ratio | 15.3% |
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| Drivers’ average age | 47.7 yrs |
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| Drivers’ average income | $81,298 |
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A significant share of driving in Washington County, Maryland, 43% of vehicle-miles, happens on local roads. The average non-highway road carries 4,127 vehicles per day.
Local roads make up 82% of the monitored road miles (574 miles in 14,000 segments) but carry less than their share of travel: 2,124,353 vehicle-miles traveled per day (≈775 million per year). The truck share on non-highway roads is 5.5%.
Drivers from lower-income areas than 70% of counties in Maryland
The concentration of trucks on non-highway roads is 73% lower than on highways.
The non-highway congestion ratio of 15.3% is 20% lower than the state level, suggesting more efficient local mobility than the state average.
70% of counties in Maryland see higher average driver income among trip origins than Washington. Washington's median driver age is higher than 61% of counties in Maryland.