
Total Traffic Volume & Performance in Union County, New Jersey
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day15,365 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 8.3% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 34.3 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. | 39.7% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 46.4 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $129,252 |
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Our data shows 15,365 vehicles per day on the average road in Union County, New Jersey, and 8,438,338 vehicle-miles traveled per day (≈3.1 billion per year) across its 407 miles of monitored roads. About 1 in 12 vehicles is a truck, in line with New Jersey (7.9%).
The busiest roads of any county in New Jersey
Union sees 73% higher average daily traffic volume than the state average (15,365 vehicles per day against 8,886), suggesting more demand on each road - heavy exposure for roadside retail, and tight road space for deliveries. In total volume terms, its road network carries about 5.5% of New Jersey's statewide total of vehicle-miles. At 15,365 vehicles per day, Union posts the highest average traffic volume in New Jersey.
The average trip takes 34.3 minutes, on par with the state level. 65% of counties in New Jersey have a shorter average travel time than Union's 34.3 minutes.
Congestion runs 47% higher than the state level, at a ratio of 39.7%, which means more pronounced congestion - expect slower peak-hour deliveries and less predictable arrival times.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Union County, New Jersey
| Traffic | vehicles per day35,321 |
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| Trucks | 10.6% |
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| Average travel time | 42.2 min |
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| Congestion ratio | 69.4% |
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| Drivers’ average age | 46.4 yrs |
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| Drivers’ average income | $131,496 |
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A little more than half of the driving in Union County, New Jersey happens on highways: 63% of all vehicle-miles. The average highway carries 35,321 vehicles per day, 168% more than the average non-highway road in the same area, which carries 13,164 vehicles per day.
With 33% of the road miles (136 miles in 1,584 segments), highways punch above their length, carrying 5,317,096 vehicle-miles traveled per day (≈1.9 billion per year).
70% of counties in New Jersey move less traffic on their highways.
The most highway trucks of any county in New Jersey
At 10.6%, the highway truck share matches the state average for similar road classifications. The highway traffic mix is typical for New Jersey: neither freight- nor commuter-dominated.
By truck concentration, highways here outrank 60% of counties in New Jersey. At roughly 4,121 trucks per day, Union carries the highest volume of highway trucks in New Jersey.

Non-highway Traffic in Union County, New Jersey
| Traffic | vehicles per day13,164 |
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| Trucks | 4.5% |
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| Average travel time | 33.4 min |
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| Congestion ratio | 36.5% |
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| Drivers’ average age | 46.5 yrs |
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| Drivers’ average income | $127,569 |
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A significant share of driving in Union County, New Jersey, 37% of vehicle-miles, happens on local roads. A typical local road sees 13,164 vehicles per day.
Spread over 271 miles and 14,359 segments, 67% of the road network, local roads carry a lighter load per mile: 3,121,242 vehicle-miles traveled per day (≈1.1 billion per year). Trucks make up 4.5% of non-highway traffic, about 1 in 22 vehicles.
Younger drivers than 90% of counties in New Jersey
Compared to highways, non-highway routes see 58% fewer trucks by share.
At 50% higher than the state level, the non-highway congestion ratio of 36.5% signals more friction on local roads.
Trip origins here have higher average income than 70% of counties in New Jersey. The driver population here skews younger than 90% of counties in New Jersey.