This page delivers traffic analytics for Illinois. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Illinois among 36,683 road miles divided in 603,276 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 321 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
The average number of vehicles that travel each day over any road in the road network.
8,480
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
10.2%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
34.1 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
20.6%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
46.1 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$95,123
Our data indicates an estimated average traffic volume of 8,480 vehicles per day in Illinois that results in 237,902,162 vehicle-miles traveled per day (≈86.8 billion per year). The traffic stream is comprised of an average of 1 truck for every 10 vehicles. Typical time spent behind the wheel per trip is 34.1 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the US national averages: At 8,480 vehicles per day, the average monitored road in Illinois carries 21% more traffic than the national average of 6,986 vehicles per day - a critical factor for logistics and site planning. Across the whole network that adds up to 237,902,162 vehicle-miles traveled per day (≈86.8 billion per year), roughly 3.1% of the national total. The average trip takes 34.1 minutes, 2% higher than the national level. At 9% higher than the national level, the 20.6% congestion ratio signals more pronounced congestion - crucial for traffic control improvement and logistics planning. 88% of states nationwide see less traffic than Illinois's 8,480 vehicles per day. On travel time, Illinois runs longer than 76% of states nationwide.
Highway vs. Non-Highway Traffic Analysis
Highway Traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
16,114
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
17.3%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
42.3 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
35.2%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
46.5 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$92,694
A significant volume of traffic in Illinois utilizes the highway network. The average highway carries 16,114 vehicles per day, 96% more than the average non-highway road in the same area, which carries 8,226 vehicles per day. That average covers 6,484 highway road miles divided in 19,376 segments (average segment length 1,767 ft), together carrying 93,958,272 vehicle-miles traveled per day (≈34.3 billion per year). By highway travel volume, Illinois outranks 78% of states nationwide. Trucks constitute 17.3% of highway traffic.
Analytical insight
Highway truck concentration here runs 33% higher than the national average, at 17.3% - positioning Illinois as a significant freight corridor. For logistics operators, this validates the importance of highway access. Illinois's highway truck share (17.3%) is higher than 92% of states nationwide. By raw truck volume, Illinois carries more highway trucks than 92% of states nationwide.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
8,226
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
5.5%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
33.9 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
20.6%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
46.2 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$96,977
The non-highway road network in Illinois supports a substantial volume of traffic. The average non-highway road carries 8,226 vehicles per day, 49% less than the average highway in the same area, which carries 16,114 vehicles per day. That average covers 30,199 non-highway road miles divided in 583,900 segments (average segment length 273 ft), together carrying 143,943,893 vehicle-miles traveled per day (≈52.5 billion per year). Trucks constitute 5.5% of non-highway traffic.
Analytical insight
The concentration of trucks on non-highway roads is 68% lower than on highways. Non-highway congestion (20.6%) runs 13% higher than the national average, pointing to slower local traffic flow. 76% of states nationwide see shorter overall travel times than Illinois. Illinois's average driver income exceeds 70% of states nationwide. Illinois's median driver age is higher than 57% of states nationwide.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–12:00 PM and PM peak 3:00 PM–7:00 PM, with volumes reaching approximately 64% higher than the daily average.
Weekend traffic:
Weekend volumes run about 18% below weekday levels.
Seasonal Fluctuation
Busy season:
May–July is the high season, with volumes +4% versus the annual average.
Lowest month:
January is the quietest month, with volumes -10% versus the annual average.
Analytical insight
In Illinois, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is mild at +4% in high season.
Traffic Flow Profile Comparison
Metric
Illinois
United States
Average
Difference
Traffic
8,480
6,986
+21.4%
Truck % (Total Traffic)
10.2%
9.3%
+8.9%
Truck % (Highway)
17.3%
13.1%
+32.6%
Avg. Travel Time
34.1 min
33.3 min
+2.5%
Frequently Asked Questions
The average daily traffic volume is calculated at 8,480 vehicles per day, providing a baseline for daily operations and site assessment.
Illinois carries more highway trucks by raw volume than 92% of states nationwide, at roughly 2,793 per day.
Traffic volumes are typically 4% higher during May–July. Volumes drop to their lowest levels in January, averaging 7,636 vehicles per day - a 10% decrease from the annual average.
The average travel time for drivers is 34.1 minutes, offering a standard metric for commute and delivery route planning.
Weekday peaks occur between 7:00 AM and 12:00 PM in the morning and between 3:00 PM and 7:00 PM in the evening - about 64% above the daily average.
Trucks account for approximately 10.2% of the total traffic mix across all road types, with a significantly higher concentration of 17.3% on highways.
Data Sources & Methodology
The data presented on this page is derived from TrafficZoom's proprietary analytics platform, which aggregates and normalizes information from multiple sources, including:
Mobile device location data (anonymized and aggregated)
