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Traffic | vehicles per day4,508 |
|---|---|
Trucks | 12.7% |
Average travel time | 33.1 min |
Congestion ratio | 12.0% |
Drivers’ average age | 48.3 yrs |
Drivers’ average income | $69,000 |
A typical monitored road in Williamson County, Illinois sees 4,508 vehicles per day, while its 338 miles of monitored roads together handle 2,115,226 vehicle-miles traveled per day (≈772 million per year). Trucks are 12.7% of traffic, more than the 10.2% across Illinois.
At 4,508 vehicles per day, the average monitored road in Williamson carries 47% less traffic than the state average of 8,480, suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. Across the whole network, that travel is about 0.9% of Illinois's statewide total. 75% of counties in Illinois see less traffic than Williamson's 4,508 vehicles per day.
At 33.1 minutes, the average travel time matches the state level closely. On travel time, Williamson runs shorter than 62% of counties in Illinois.
Congestion runs 42% lower than the state level, at a ratio of 12.0%, which means smoother traffic flow - fewer delays make delivery windows more reliable.
| Traffic | vehicles per day13,775 |
|---|---|
| Trucks | 17.7% |
| Average travel time | 38.2 min |
| Congestion ratio | 24.9% |
| Drivers’ average age | 48.1 yrs |
| Drivers’ average income | $67,935 |
A little more than half of the driving in Williamson County, Illinois happens on highways: 61% of all vehicle-miles. The average highway carries 13,775 vehicles per day, 248% more than the average non-highway road in the same area, which carries 3,953 vehicles per day.
With 28% of the road miles (95 miles in 309 segments), highways punch above their length, carrying 1,286,378 vehicle-miles traveled per day (≈470 million per year).
By highway travel volume, Williamson outranks 80% of counties in Illinois.
At 17.7%, the highway truck share matches the state average for similar road classifications. The highway traffic mix is typical for Illinois: neither freight- nor commuter-dominated.
By truck concentration, highways here trail 59% of counties in Illinois. Williamson's highway truck count is higher than 58% of counties in Illinois, at roughly 2,434 trucks per day.
| Traffic | vehicles per day3,953 |
|---|---|
| Trucks | 4.9% |
| Average travel time | 32.8 min |
| Congestion ratio | 11.3% |
| Drivers’ average age | 48.5 yrs |
| Drivers’ average income | $69,846 |
Local roads carry a significant share of travel in Williamson County, Illinois: 39% of all vehicle-miles. The average non-highway road carries 3,953 vehicles per day.
Local roads make up 72% of the monitored road miles (242 miles in 5,164 segments) but carry less than their share of travel: 828,848 vehicle-miles traveled per day (≈303 million per year). Trucks make up 4.9% of non-highway traffic, about 1 in 20 vehicles.
Compared to highways, non-highway routes see 72% fewer trucks by share.
At 45% lower than the state level, the non-highway congestion ratio of 11.3% signals easier movement on local roads.
Williamson's average driver income is lower than 60% of counties in Illinois. Williamson's median driver age is lower than 68% of counties in Illinois.
Mobile device location data (anonymized and aggregated)
Road sensor networks and traffic counters
Historical traffic pattern databases
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