
Total Traffic Volume & Performance in Grayson County, Texas
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day4,501 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 9.8% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 31.5 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. | 12.8% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 46.9 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $82,001 |
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Our data shows 4,501 vehicles per day on the average road in Grayson County, Texas, and 4,293,979 vehicle-miles traveled per day (≈1.6 billion per year) across its 757 miles of monitored roads. Trucks are 9.8% of traffic, close to the 9.8% across Texas.
Shorter trips than 81% of counties in Texas
Grayson's average daily traffic volume is 35% lower than the state average - 4,501 vehicles per day against 6,895 - suggesting less traffic load per road - lighter roads for freight, but less passing trade for roadside retail. Network-wide, Grayson accounts for about 0.6% of Texas's statewide total of vehicle-miles. 73% of counties in Texas see less traffic than Grayson's 4,501 vehicles per day.
Journey times here (31.5 minutes on average) closely track the state level. On travel time, Grayson runs shorter than 81% of counties in Texas.
At 22% lower than the state level, the 12.8% congestion ratio signals smoother traffic flow - relevant for traffic control and delivery planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Grayson County, Texas
| Traffic | vehicles per day12,598 |
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| Trucks | 13.5% |
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| Average travel time | 39.7 min |
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| Congestion ratio | 23.2% |
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| Drivers’ average age | 46.0 yrs |
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| Drivers’ average income | $80,463 |
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Travel in Grayson County, Texas splits roughly evenly, with about half of it (48% of vehicle-miles) on highways. The average highway carries 12,598 vehicles per day, 208% more than the average non-highway road in the same area, which carries 4,094 vehicles per day.
Highways make up 19% of the monitored road miles (146 miles, 629 segments), so they carry more than their share: 2,059,892 vehicle-miles traveled per day (≈752 million per year).
That is more highway travel volume than 86% of counties in Texas.
More highway trucks than 68% of counties in Texas
The concentration of trucks on highways (13.5%) is in line with the state average for similar road classifications. The highway traffic mix is typical for Texas: neither freight- nor commuter-dominated.
62% of counties in Texas see a higher highway truck share than Grayson's 13.5%. By raw truck volume, Grayson carries more highway trucks than 68% of counties in Texas.

Non-highway Traffic in Grayson County, Texas
| Traffic | vehicles per day4,094 |
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| Trucks | 6.5% |
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| Average travel time | 31.1 min |
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| Congestion ratio | 12.3% |
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| Drivers’ average age | 47.5 yrs |
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| Drivers’ average income | $83,012 |
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Travel in Grayson County, Texas splits roughly evenly, with about half of it (52% of vehicle-miles) on local roads. On the average non-highway road, that comes to 4,094 vehicles per day.
Local roads make up 81% of the monitored road miles (611 miles in 12,509 segments) but carry less than their share of travel: 2,234,087 vehicle-miles traveled per day (≈815 million per year). Trucks make up 6.5% of non-highway traffic, about 1 in 15 vehicles.
Drivers from higher-income areas than 82% of counties in Texas
Compared to highways, non-highway routes see 52% fewer trucks by share.
At 23% lower than the state level, the non-highway congestion ratio of 12.3% signals easier movement on local roads.
82% of counties in Texas see lower average driver income among trip origins than Grayson. 62% of counties in Texas have a younger driver population than Grayson.