
Total Traffic Volume & Performance in Greene County, Illinois
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day2,318 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 11.4% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 35.1 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. | 7.4% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 50.1 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $67,303 |
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A typical monitored road in Greene County, Illinois sees 2,318 vehicles per day, while its 147 miles of monitored roads together handle 229,168 vehicle-miles traveled per day (≈83.6 million per year). Trucks are 11.4% of traffic, close to the 10.2% across Illinois.
Traffic 73% below the Illinois average
At 2,318 vehicles per day, the average monitored road in Greene carries 73% less traffic than the state average of 8,480, suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Network-wide, Greene accounts for less than 0.1% of Illinois's statewide total of vehicle-miles. By volume, Greene's 2,318 vehicles per day trails 70% of counties in Illinois.
At 35.1 minutes, the average travel time matches the state level closely. 73% of counties in Illinois have a shorter average travel time than Greene's 35.1 minutes.
The congestion ratio of 7.4% is 64% lower, pointing to smoother traffic flow than the state level - delays are rare enough to plan travel times almost to the minute.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Greene County, Illinois
| Traffic | vehicles per day4,929 |
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| Trucks | 13.2% |
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| Average travel time | 32.0 min |
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| Congestion ratio | 11.7% |
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| Drivers’ average age | 50.2 yrs |
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| Drivers’ average income | $65,020 |
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Travel in Greene County, Illinois splits roughly evenly, with about half of it (49% of vehicle-miles) on highways. The average highway carries 4,929 vehicles per day, 288% more than the average non-highway road in the same area, which carries 1,272 vehicles per day.
With 17% of the road miles (25 miles in 374 segments), highways punch above their length, carrying 112,077 vehicle-miles traveled per day (≈40.9 million per year).
Fewer highway trucks than 86% of counties in Illinois
At 13.2%, highway truck share is 24% lower than the state average. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
Greene's highway truck share (13.2%) is lower than 79% of counties in Illinois. Greene's highway truck count is lower than 86% of counties in Illinois, at roughly 648 trucks per day.

Non-highway Traffic in Greene County, Illinois
| Traffic | vehicles per day1,272 |
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| Trucks | 9.7% |
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| Average travel time | 36.4 min |
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| Congestion ratio | 5.7% |
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| Drivers’ average age | 49.3 yrs |
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| Drivers’ average income | $70,235 |
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Travel in Greene County, Illinois splits roughly evenly, with about half of it (51% of vehicle-miles) on local roads. The average non-highway road carries 1,272 vehicles per day.
Spread over 122 miles and 933 segments, 83% of the road network, local roads carry a lighter load per mile: 117,092 vehicle-miles traveled per day (≈42.7 million per year). About 1 in 10 vehicles on non-highway roads is a truck (9.7%).
Local congestion 72% below the Illinois average
Compared to highways, non-highway routes see 26% fewer trucks by share.
At 72% lower than the state level, the non-highway congestion ratio of 5.7% signals easier movement on local roads.
Trip origins here have lower average income than 64% of counties in Illinois. 66% of counties in Illinois have a younger driver population than Greene.