
Total Traffic Volume & Performance in Johnston County, North Carolina
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day5,784 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 11.6% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 31.0 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. | 16.6% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 44.5 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $84,143 |
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Our data shows 5,784 vehicles per day on the average road in Johnston County, North Carolina, and 6,802,026 vehicle-miles traveled per day (≈2.5 billion per year) across its 862 miles of monitored roads. At 11.6%, the truck share runs above the 8.7% across North Carolina: about 1 in 9 vehicles.
Shorter trips than 71% of counties in North Carolina
At 5,784 vehicles per day, the average road in Johnston carries somewhat less traffic than the state average of 6,332 (9% less). In total volume terms, its road network carries about 2.5% of North Carolina's statewide total of vehicle-miles. By volume, Johnston's 5,784 vehicles per day outpaces 68% of counties in North Carolina.
At 31.0 minutes, the average travel time matches the state level closely. 71% of counties in North Carolina have a longer average travel time than Johnston's 31.0 minutes.
Congestion is somewhat lower than the state level, at a ratio of 16.6% (11% lower) - relevant for traffic control and delivery planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Johnston County, North Carolina
| Traffic | vehicles per day15,390 |
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| Trucks | 17.9% |
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| Average travel time | 45.2 min |
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| Congestion ratio | 31.1% |
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| Drivers’ average age | 44.6 yrs |
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| Drivers’ average income | $73,613 |
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Travel in Johnston County, North Carolina splits roughly evenly, with about half of it (53% of vehicle-miles) on highways. The average highway carries 15,390 vehicles per day, 182% more than the average non-highway road in the same area, which carries 5,448 vehicles per day.
With 24% of the road miles (210 miles in 559 segments), highways punch above their length, carrying 3,582,516 vehicle-miles traveled per day (≈1.3 billion per year).
By highway travel volume, Johnston outranks 93% of counties in North Carolina.
Higher highway truck share than 91% of counties in North Carolina
Highway truck concentration here runs 48% higher than the state average, at 17.9%. Highways here lean toward freight, so highway access is a real asset for logistics operators.
91% of counties in North Carolina see a lower highway truck share than Johnston's 17.9%. By raw truck volume, Johnston carries more highway trucks than 91% of counties in North Carolina.

Non-highway Traffic in Johnston County, North Carolina
| Traffic | vehicles per day5,448 |
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| Trucks | 4.6% |
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| Average travel time | 30.5 min |
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| Congestion ratio | 16.1% |
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| Drivers’ average age | 44.5 yrs |
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| Drivers’ average income | $88,463 |
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Travel in Johnston County, North Carolina splits roughly evenly, with about half of it (47% of vehicle-miles) on local roads. On the average non-highway road, that comes to 5,448 vehicles per day.
Spread over 652 miles and 16,014 segments, 76% of the road network, local roads carry a lighter load per mile: 3,219,510 vehicle-miles traveled per day (≈1.2 billion per year). The truck share on non-highway roads is 4.6%.
Drivers from higher-income areas than 89% of counties in North Carolina
Non-highway roads carry a truck concentration that's 74% lower than the highway network.
Non-highway congestion (16.1%) runs slightly lower than the state level (9% lower).
89% of counties in North Carolina see lower average driver income among trip origins than Johnston. 88% of counties in North Carolina have an older driver population than Johnston.