
Total Traffic Volume & Performance in Harford County, Maryland
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day7,891 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 8.9% |
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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. | 21.4% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 47.7 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $117,709 |
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A typical monitored road in Harford County, Maryland sees 7,891 vehicles per day, while its 566 miles of monitored roads together handle 5,829,468 vehicle-miles traveled per day (≈2.1 billion per year). Trucks are 8.9% of traffic, more than the 7.5% across Maryland.
Busier roads than 74% of counties in Maryland
The average road in Harford carries 7,891 vehicles per day, essentially matching the state average of 7,693. Network-wide, Harford accounts for about 4.3% of Maryland's statewide total of vehicle-miles. 74% of counties in Maryland see less traffic than Harford's 7,891 vehicles per day.
The average trip takes 31.9 minutes, 6% lower than the state level. Its average travel time of 31.9 minutes is shorter than 74% of counties in Maryland.
At 21.4%, the congestion ratio matches the state level closely.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Harford County, Maryland
| Traffic | vehicles per day16,693 |
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| Trucks | 12.9% |
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| Average travel time | 39.3 min |
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| Congestion ratio | 34.5% |
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| Drivers’ average age | 46.9 yrs |
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| Drivers’ average income | $109,518 |
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Travel in Harford County, Maryland splits roughly evenly, with about half of it (51% of vehicle-miles) on highways. The average highway carries 16,693 vehicles per day, 136% more than the average non-highway road in the same area, which carries 7,067 vehicles per day.
With 22% of the road miles (123 miles in 1,412 segments), highways punch above their length, carrying 2,953,974 vehicle-miles traveled per day (≈1.1 billion per year).
By highway travel volume, Harford outranks 70% of counties in Maryland.
Higher highway truck share than 78% of counties in Maryland
At 12.9%, highway truck share is 32% higher than the state average. Highways here lean toward freight, so highway access is a real asset for logistics operators.
78% of counties in Maryland see a lower highway truck share than Harford's 12.9%. 70% of counties in Maryland see fewer highway trucks per day than Harford's roughly 2,155.

Non-highway Traffic in Harford County, Maryland
| Traffic | vehicles per day7,067 |
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| Trucks | 4.8% |
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| Average travel time | 31.1 min |
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| Congestion ratio | 20.2% |
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| Drivers’ average age | 48.2 yrs |
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| Drivers’ average income | $122,482 |
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Travel in Harford County, Maryland splits roughly evenly, with about half of it (49% of vehicle-miles) on local roads. The average non-highway road carries 7,067 vehicles per day.
Spread over 443 miles and 15,069 segments, 78% of the road network, local roads carry a lighter load per mile: 2,875,494 vehicle-miles traveled per day (≈1.0 billion per year). Trucks make up 4.8% of non-highway traffic, about 1 in 21 vehicles.
Local roads carry 63% fewer trucks by share than highways
The concentration of trucks on non-highway roads is 63% lower than on highways.
Non-highway congestion (20.2%) runs slightly higher than the state level (5% higher).
Harford's average driver income is higher than 61% of counties in Maryland. The driver population here skews older than 57% of counties in Maryland.