
Total Traffic Volume & Performance in Callahan County, Texas
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day2,056 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 19.8% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 35.0 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. | 7.3% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 45.7 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $73,034 |
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The average monitored road in Callahan County, Texas carries 2,056 vehicles per day. Across its 325 miles of monitored roads, that adds up to 1,047,459 vehicle-miles traveled per day (≈382 million per year). About 1 in 5 vehicles is a truck, well above the 9.8% across Texas - a freight-heavy mix.
Traffic 70% below the Texas average
Callahan's average daily traffic volume is 70% lower than the state average - 2,056 vehicles per day against 6,895 - suggesting less traffic load per road - quiet roads that suit freight movement more than drive-by retail. Network-wide, Callahan accounts for about 0.1% of Texas's statewide total of vehicle-miles. 72% of counties in Texas see more traffic than Callahan's 2,056 vehicles per day.
At 35.0 minutes, the average travel time is 7% higher than the state level. Its average travel time of 35.0 minutes is longer than 53% of counties in Texas.
Congestion runs 56% lower than the state level, at a ratio of 7.3%, which means smoother traffic flow - delays are rare enough to plan travel times almost to the minute.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Callahan County, Texas
| Traffic | vehicles per day10,878 |
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| Trucks | 25.1% |
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| Average travel time | 47.7 min |
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| Congestion ratio | 24.1% |
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| Drivers’ average age | 45.0 yrs |
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| Drivers’ average income | $74,043 |
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A little more than half of the driving in Callahan County, Texas happens on highways: 68% of all vehicle-miles. The average highway carries 10,878 vehicles per day, 618% more than the average non-highway road in the same area, which carries 1,516 vehicles per day.
Yet highways are only 19% of the road network, 62 miles in 145 segments, so each mile of them is 3.6 times as busy as the average road mile.
58% of counties in Texas move less traffic on their highways.
A major freight corridor
Highway truck concentration here runs 82% higher than the state average, at 25.1%. That marks Callahan as a major freight corridor, where highway access is what logistics operators compete on.
By truck concentration, highways here outrank 85% of counties in Texas. 84% of counties in Texas see fewer highway trucks per day than Callahan's roughly 2,725.

Non-highway Traffic in Callahan County, Texas
| Traffic | vehicles per day1,516 |
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| Trucks | 8.6% |
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| Average travel time | 34.2 min |
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| Congestion ratio | 6.2% |
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| Drivers’ average age | 49.0 yrs |
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| Drivers’ average income | $71,670 |
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A significant share of driving in Callahan County, Texas, 32% of vehicle-miles, happens on local roads. On the average non-highway road, that comes to 1,516 vehicles per day.
Local roads make up 81% of the monitored road miles (263 miles in 2,367 segments) but carry less than their share of travel: 331,105 vehicle-miles traveled per day (≈121 million per year). The truck share on non-highway roads is 8.6%.
Local congestion 61% below the Texas average
The concentration of trucks on non-highway roads is 66% lower than on highways.
Non-highway congestion (6.2%) runs 61% lower than the state average, pointing to smoother local traffic flow.
Callahan's average driver income is higher than 62% of counties in Texas. 50% of counties in Texas have a younger driver population than Callahan.