
Total Traffic Volume & Performance in Sussex County, New Jersey
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day5,400 |
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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. | 33.3 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. | 18.9% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 50.6 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $124,181 |
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A typical monitored road in Sussex County, New Jersey sees 5,400 vehicles per day, while its 510 miles of monitored roads together handle 2,542,654 vehicle-miles traveled per day (≈928 million per year). Trucks are 7.0% of traffic, close to the 7.9% across New Jersey.
Quieter roads than 80% of counties in New Jersey
Sussex sees 39% lower average daily traffic volume than the state average (5,400 vehicles per day against 8,886), suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Across the whole network, that travel is about 1.7% of New Jersey's statewide total. Sussex carries less traffic than 80% of counties in New Jersey.
The average trip takes 33.3 minutes, on par with the state level. On travel time, Sussex runs longer than 50% of counties in New Jersey.
The congestion ratio of 18.9% is 30% lower, pointing to smoother traffic flow than the state level - travel times are easy to plan around for scheduled deliveries.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Sussex County, New Jersey
| Traffic | vehicles per day16,709 |
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| Trucks | 12.3% |
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| Average travel time | 52.3 min |
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| Congestion ratio | 32.7% |
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| Drivers’ average age | 49.6 yrs |
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| Drivers’ average income | $127,881 |
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At 18% of vehicle-miles, highways carry a smaller share of the traffic in Sussex County, New Jersey than local roads. The average highway carries 16,709 vehicles per day, 213% more than the average non-highway road in the same area, which carries 5,334 vehicles per day.
Yet highways are only 5% of the road network, 26 miles in 62 segments, so each mile of them is 3.6 times as busy as the average road mile.
Higher highway truck share than 70% of counties in New Jersey
The concentration of trucks on highways (12.3%) is 20% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.
By truck concentration, highways here outrank 70% of counties in New Jersey. Sussex's highway truck count is lower than 70% of counties in New Jersey, at roughly 2,049 trucks per day.

Non-highway Traffic in Sussex County, New Jersey
| Traffic | vehicles per day5,334 |
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| Trucks | 5.9% |
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| Average travel time | 33.2 min |
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| Congestion ratio | 18.8% |
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| Drivers’ average age | 50.7 yrs |
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| Drivers’ average income | $123,681 |
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Local roads carry the vast majority of travel in Sussex County, New Jersey, 82% of all vehicle-miles. The average non-highway road carries 5,334 vehicles per day.
Local roads also make up about 95% of the monitored road miles: 484 miles in 10,619 segments, together carrying 2,079,113 vehicle-miles traveled per day (≈759 million per year). Trucks make up 5.9% of non-highway traffic, about 1 in 17 vehicles.
Older drivers than 95% of counties in New Jersey
The concentration of trucks on non-highway roads is 52% lower than on highways.
At 23% lower than the state level, the non-highway congestion ratio of 18.8% signals easier movement on local roads.
Sussex's average driver income is higher than 60% of counties in New Jersey. 95% of counties in New Jersey have a younger driver population than Sussex.