
Total Traffic Volume & Performance in Salem County, New Jersey
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day3,362 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 14.3% |
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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. | 10.9% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 48.3 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $89,005 |
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Our data shows 3,362 vehicles per day on the average road in Salem County, New Jersey, and 1,847,133 vehicle-miles traveled per day (≈674 million per year) across its 482 miles of monitored roads. Freight weighs heavily here: trucks are 14.3% of traffic, against 7.9% across New Jersey.
The quietest roads of any county in New Jersey
Salem sees 62% lower average daily traffic volume than the state average (3,362 vehicles per day against 8,886), suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 1.2% of New Jersey's statewide total of vehicle-miles. Salem stands out as having the lowest traffic volume in New Jersey - 3,362 vehicles per day.
At 31.9 minutes, the average travel time matches the state level closely. 80% of counties in New Jersey have a longer average travel time than Salem's 31.9 minutes.
Congestion runs 60% lower than the state level, at a ratio of 10.9%, which means smoother traffic flow - free-flowing roads make scheduled deliveries highly predictable.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Salem County, New Jersey
| Traffic | vehicles per day10,316 |
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| Trucks | 19.7% |
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| Average travel time | 42.2 min |
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| Congestion ratio | 27.8% |
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| Drivers’ average age | 48.1 yrs |
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| Drivers’ average income | $85,767 |
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Highways carry more than half of all travel in Salem County, New Jersey (58% of vehicle-miles). The average highway carries 10,316 vehicles per day, 361% more than the average non-highway road in the same area, which carries 2,236 vehicles per day.
Yet highways are only 19% of the road network, 90 miles in 1,459 segments, so each mile of them is 3.1 times as busy as the average road mile.
The highest highway truck share of any county in New Jersey
Highway truck concentration here runs 93% higher than the state average, at 19.7%. Highways here lean toward freight, so highway access is a real asset for logistics operators.
Salem also posts the highest highway truck share in New Jersey - 19.7%. 55% of counties in New Jersey see more highway trucks per day than Salem's roughly 2,030.

Non-highway Traffic in Salem County, New Jersey
| Traffic | vehicles per day2,236 |
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| Trucks | 6.9% |
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| Average travel time | 30.3 min |
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| Congestion ratio | 8.2% |
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| Drivers’ average age | 48.7 yrs |
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| Drivers’ average income | $92,019 |
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Local roads carry a significant share of travel in Salem County, New Jersey: 42% of all vehicle-miles. On the average non-highway road, that comes to 2,236 vehicles per day.
Spread over 392 miles and 9,008 segments, 81% of the road network, local roads carry a lighter load per mile: 775,327 vehicle-miles traveled per day (≈283 million per year). The truck share on non-highway roads is 6.9%.
Drivers from lower-income areas than 95% of counties in New Jersey
The concentration of trucks on non-highway roads is 65% lower than on highways.
At 66% lower than the state level, the non-highway congestion ratio of 8.2% signals easier movement on local roads.
Salem's average driver income is lower than 95% of counties in New Jersey. The driver population here skews older than 55% of counties in New Jersey.