This page delivers traffic analytics for Williamson County, Tennessee. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Williamson County, Tennessee among 650 road miles divided in 14,921 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 230 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.
7,983
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
8.9%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
29.7 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.
20.9%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
45.1 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$128,274
Our data indicates an estimated average traffic volume of 7,983 vehicles per day in Williamson County, Tennessee that results in 6,972,485 vehicle-miles traveled per day (≈2.5 billion per year). The traffic stream is comprised of an average of 1 truck for every 11 vehicles. Typical time spent behind the wheel per trip is 29.7 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Tennessee state averages: Williamson's average daily traffic volume is 10% higher than the state average - 7,983 vehicles per day against 7,251 - suggesting more traffic load per road, a critical factor for logistics and site planning. Network-wide, Williamson accounts for about 3.9% of Tennessee's statewide total, at 6,972,485 vehicle-miles traveled per day (≈2.5 billion per year). The average trip takes 29.7 minutes, 7% lower than the state level. Congestion runs 30% higher than the state level, at a ratio of 20.9% - more pronounced congestion - crucial for traffic control improvement and logistics planning. 87% of counties in Tennessee see less traffic than Williamson's 7,983 vehicles per day. Its average travel time of 29.7 minutes is longer than 11% of counties in Tennessee.
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.
25,627
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
12.9%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
38.8 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.
37.6%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
44.1 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$111,708
A significant volume of traffic in Williamson County, Tennessee utilizes the highway network. The average highway carries 25,627 vehicles per day, 236% more than the average non-highway road in the same area, which carries 7,618 vehicles per day. That average covers 132 highway road miles divided in 303 segments (average segment length 2,303 ft), together carrying 3,616,453 vehicle-miles traveled per day (≈1.3 billion per year). By highway travel volume, that ranks Williamson in the top 5 counties in Tennessee. Trucks constitute 12.9% of highway traffic.
Analytical insight
At 12.9%, highway truck share is 17% lower than the state average, marking Williamson as a primarily local traffic hub - underscoring the importance of local access for logistics operators. Williamson's highway truck share (12.9%) is higher than 51% of counties in Tennessee. Williamson's highway truck count is higher than 76% of counties in Tennessee, at roughly 3,306 trucks per day.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
7,618
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
4.5%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
29.5 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.
45.5 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$137,730
The non-highway road network in Williamson County, Tennessee supports a substantial volume of traffic. The average non-highway road carries 7,618 vehicles per day, 70% less than the average highway in the same area, which carries 25,627 vehicles per day. That average covers 518 non-highway road miles divided in 14,618 segments (average segment length 187 ft), together carrying 3,356,033 vehicle-miles traveled per day (≈1.2 billion per year). Trucks constitute 4.5% of non-highway traffic.
Analytical insight
Non-highway roads carry a truck concentration that's 65% lower than the highway network. The non-highway congestion ratio of 20.6% is 34% higher than the state level, suggesting slower local mobility than the state average. Overall, average travel time here is longer than 11% of counties in Tennessee. Trips here originate from the highest average driver income in Tennessee, at $128,274. The driver population here skews older than 8% of counties in Tennessee.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and PM peak 3:00 PM–7:00 PM, with volumes reaching approximately 80% higher than the daily average.
Weekend traffic:
Weekend volumes run about 26% below weekday levels.
Seasonal Fluctuation
Busy season:
August–October is the high season, with volumes +6% versus the annual average.
Lowest month:
January is the quietest month, with volumes -13% versus the annual average.
Analytical insight
In Williamson County, Tennessee, the peak hour concentrates about 8% of the day's traffic, and seasonal swing is mild at +6% in high season.
Traffic Flow Profile Comparison
Metric
Williamson
Tennessee
Average
Difference
Traffic
7,983
7,251
+10.1%
Truck % (Total Traffic)
8.9%
11.3%
-21.8%
Truck % (Highway)
12.9%
15.6%
-17.4%
Avg. Travel Time
29.7 min
32.1 min
-7.5%
Frequently Asked Questions
The average daily traffic volume is calculated at 7,983 vehicles per day, providing a baseline for daily operations and site assessment.
Yes - Williamson has the highest average driver income of any county in Tennessee, at $128,274.
The average travel time for drivers is 29.7 minutes, offering a standard metric for commute and delivery route planning.
Approximately 43% of highway traffic and 13% of non-highway traffic consists of vehicles whose trip originates outside Williamson County, Tennessee. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
Weekday peaks occur between 7:00 AM and 9:00 AM in the morning and between 3:00 PM and 7:00 PM in the evening - about 80% above the daily average.
Traffic volumes are typically 6% higher during August–October. Volumes drop to their lowest levels in January, averaging 6,982 vehicles per day - a 13% decrease from the annual average.
Trucks account for approximately 8.9% of the total traffic mix across all road types, with a significantly higher concentration of 12.9% 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)
