
Total Traffic Volume & Performance in Kern County, California
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day6,263 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 16.4% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 34.5 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. | 17.8% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 41.0 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $83,742 |
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Our data shows 6,263 vehicles per day on the average road in Kern County, California, and 27,254,553 vehicle-miles traveled per day (≈9.9 billion per year) across its 3,395 miles of monitored roads. Freight weighs heavily here: trucks are 16.4% of traffic, against 7.8% across California.
Traffic 51% below the California average
Kern's average daily traffic volume is 51% lower than the state average - 6,263 vehicles per day against 12,766 - suggesting less traffic load per road - very light roads: easy truck access, but little passing trade for roadside retail. Across the whole network, that travel is about 2.9% of California's statewide total. 54% of counties in California see more traffic than Kern's 6,263 vehicles per day.
The average trip takes 34.5 minutes, on par with the state level. Its average travel time of 34.5 minutes is longer than 63% of counties in California.
The congestion ratio of 17.8% is 35% 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 Kern County, California
| Traffic | vehicles per day14,981 |
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| Trucks | 22.1% |
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| Average travel time | 50.7 min |
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| Congestion ratio | 28.1% |
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| Drivers’ average age | 40.8 yrs |
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| Drivers’ average income | $79,905 |
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A little more than half of the driving in Kern County, California happens on highways: 62% of all vehicle-miles. The average highway carries 14,981 vehicles per day, 164% more than the average non-highway road in the same area, which carries 5,674 vehicles per day.
Highways make up 28% of the monitored road miles (952 miles, 2,271 segments), so they carry more than their share: 17,021,414 vehicle-miles traveled per day (≈6.2 billion per year).
86% of counties in California move less traffic on their highways.
A major freight corridor
The concentration of trucks on highways (22.1%) is 113% higher than the state average for similar road classifications. That marks Kern as a major freight corridor, where highway access is what logistics operators compete on.
By truck concentration, highways here outrank 90% of counties in California. 75% of counties in California see fewer highway trucks per day than Kern's roughly 3,308.

Non-highway Traffic in Kern County, California
| Traffic | vehicles per day5,674 |
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| Trucks | 7.1% |
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| Average travel time | 33.4 min |
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| Congestion ratio | 17.2% |
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| Drivers’ average age | 41.1 yrs |
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| Drivers’ average income | $85,260 |
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Local roads carry a significant share of travel in Kern County, California: 38% of all vehicle-miles. On the average non-highway road, that comes to 5,674 vehicles per day.
Local roads make up 72% of the monitored road miles (2,442 miles in 33,609 segments) but carry less than their share of travel: 10,233,139 vehicle-miles traveled per day (≈3.7 billion per year). Trucks make up 7.1% of non-highway traffic, about 1 in 14 vehicles.
Younger drivers than 93% of counties in California
Compared to highways, non-highway routes see 68% fewer trucks by share.
The non-highway congestion ratio of 17.2% is 35% lower than the state level, suggesting more efficient local mobility than the state average.
Kern's average driver income is lower than 60% of counties in California. 93% of counties in California have an older driver population than Kern.