
Total Traffic Volume & Performance in Summit County, Utah
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day4,990 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 15.9% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 29.8 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. | 4.1% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 44.2 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $131,800 |
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A typical monitored road in Summit County, Utah sees 4,990 vehicles per day, while its 385 miles of monitored roads together handle 2,770,837 vehicle-miles traveled per day (≈1.0 billion per year). Freight weighs heavily here: trucks are 15.9% of traffic, against 8.9% across Utah.
Congestion 81% below the Utah average
At 4,990 vehicles per day, the average monitored road in Summit carries 51% less traffic than the state average of 10,198, suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. Across the whole network, that travel is about 3.2% of Utah's statewide total. Summit carries more traffic than 54% of counties in Utah.
At 29.8 minutes, the average travel time is 7% lower than the state level. Its average travel time of 29.8 minutes is shorter than 89% of counties in Utah.
At 81% lower than the state level, the 4.1% congestion ratio signals smoother traffic flow - delays are rare enough to plan travel times almost to the minute.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Summit County, Utah
| Traffic | vehicles per day22,194 |
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| Trucks | 17.9% |
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| Average travel time | 36.8 min |
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| Drivers’ average age | 43.2 yrs |
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| Drivers’ average income | $128,920 |
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The vast majority of driving in Summit County, Utah happens on highways: 82% of all vehicle-miles. The average highway carries 22,194 vehicles per day, 624% more than the average non-highway road in the same area, which carries 3,064 vehicles per day.
With 42% of the road miles (162 miles in 421 segments), highways punch above their length, carrying 2,285,130 vehicle-miles traveled per day (≈834 million per year).
79% of counties in Utah move less traffic on their highways.
More highway trucks than 83% of counties in Utah
At 17.9%, highway truck share is 45% higher than the state average. Highways here lean toward freight, so highway access is a real asset for logistics operators.
62% of counties in Utah see a lower highway truck share than Summit's 17.9%. Summit's highway truck count is higher than 83% of counties in Utah, at roughly 3,979 trucks per day.

Non-highway Traffic in Summit County, Utah
| Traffic | vehicles per day3,064 |
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| Trucks | 6.3% |
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| Average travel time | 29.1 min |
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| Congestion ratio | 4.1% |
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| Drivers’ average age | 47.5 yrs |
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| Drivers’ average income | $140,754 |
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At 18% of vehicle-miles, local roads carry a smaller share of the traffic in Summit County, Utah than highways. A typical local road sees 3,064 vehicles per day.
Local roads make up 58% of the monitored road miles (224 miles in 3,759 segments) but carry less than their share of travel: 485,707 vehicle-miles traveled per day (≈177 million per year). The truck share on non-highway roads is 6.3%.
The highest driver income of any county in Utah
Compared to highways, non-highway routes see 65% fewer trucks by share.
At 82% lower than the state level, the non-highway congestion ratio of 4.1% signals easier movement on local roads.
At $131,800, the average driver income for trips originating here is the highest in Utah. 61% of counties in Utah have a younger driver population than Summit.