
Total Traffic Volume & Performance in Middlesex County, New Jersey
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day11,977 |
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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. | 33.0 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. | 33.5% |
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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. | $134,773 |
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A typical monitored road in Middlesex County, New Jersey sees 11,977 vehicles per day, while its 950 miles of monitored roads together handle 16,312,253 vehicle-miles traveled per day (≈6.0 billion per year). Trucks are 8.9% of traffic, close to the 7.9% across New Jersey.
Busier roads than 85% of counties in New Jersey
Middlesex's average daily traffic volume is 35% higher than the state average - 11,977 vehicles per day against 8,886 - suggesting more traffic load per road - a busier backdrop for retail sites, at the cost of slower access. Across the whole network, that travel is about 11% of New Jersey's statewide total. By volume, Middlesex's 11,977 vehicles per day outpaces 85% of counties in New Jersey.
At 33.0 minutes, the average travel time matches the state level closely. On travel time, Middlesex runs shorter than 60% of counties in New Jersey.
Congestion runs 24% higher than the state level, at a ratio of 33.5%, which means more pronounced congestion - crucial for traffic control improvement and logistics planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Middlesex County, New Jersey
| Traffic | vehicles per day29,642 |
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| Trucks | 10.9% |
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| Average travel time | 40.2 min |
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| Congestion ratio | 57.5% |
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| Drivers’ average age | 46.5 yrs |
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| Drivers’ average income | $133,849 |
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A little more than half of the driving in Middlesex County, New Jersey happens on highways: 69% of all vehicle-miles. The average highway carries 29,642 vehicles per day, 207% more than the average non-highway road in the same area, which carries 9,662 vehicles per day.
With 38% of the road miles (356 miles in 3,231 segments), highways punch above their length, carrying 11,271,357 vehicle-miles traveled per day (≈4.1 billion per year).
No county in New Jersey moves more traffic on its highways.
More highway trucks than 90% of counties in New Jersey
Highway truck concentration here runs 6% higher than the state average, at 10.9%. The highway traffic mix is typical for New Jersey: neither freight- nor commuter-dominated.
By truck concentration, highways here outrank 65% of counties in New Jersey. 90% of counties in New Jersey see fewer highway trucks per day than Middlesex's roughly 3,222.

Non-highway Traffic in Middlesex County, New Jersey
| Traffic | vehicles per day9,662 |
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| Trucks | 4.5% |
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| Average travel time | 32.0 min |
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| Congestion ratio | 30.4% |
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| Drivers’ average age | 46.1 yrs |
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| Drivers’ average income | $135,848 |
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Local roads carry a significant share of travel in Middlesex County, New Jersey: 31% of all vehicle-miles. On the average non-highway road, that comes to 9,662 vehicles per day.
Local roads make up 62% of the monitored road miles (593 miles in 24,650 segments) but carry less than their share of travel: 5,040,896 vehicle-miles traveled per day (≈1.8 billion per year). Trucks make up 4.5% of non-highway traffic, about 1 in 22 vehicles.
Younger drivers than 85% of counties in New Jersey
The concentration of trucks on non-highway roads is 58% lower than on highways.
The non-highway congestion ratio of 30.4% is 25% higher than the state level, suggesting slower local mobility than the state average.
80% of counties in New Jersey see lower average driver income among trip origins than Middlesex. The driver population here skews younger than 85% of counties in New Jersey.