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Traffic heat map of Tennessee: roads over 1,000 vehicles a day shaded from blue (light) to red (heavy traffic), busiest on I 24 and I 65

Tennessee Traffic Counts

TrafficZoom tracks traffic on 25,967 road miles in Tennessee, divided into 412,483 segments averaging 332 ft. Its busiest road, I 24 in Davidson County, carries 211,830 vehicles a day, 29.2 times the average road. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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total traffic icon

Total Traffic Volume & Performance in Tennessee

Traffic

The average number of vehicles that travel each day over any road in the road network.

vehicles per day7,251
Trucks

The percentage of the total traffic volume composed of heavy vehicles.

11.3%
Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

32.1 min
Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

16.1%
Drivers’ average age

Average age of residents in the geographic areas where the vehicle trips originated.

45.5 yrs
Drivers’ average income

Average income of residents in the geographic areas where the vehicle trips originated.

$77,734

Our data shows 7,251 vehicles per day on the average road in Tennessee, and 180,022,480 vehicle-miles traveled per day (≈65.7 billion per year) across its 25,967 miles of monitored roads. Trucks are 11.3% of traffic, more than the 9.3% across the US.

Shorter trips than 82% of states nationwide

The average road in Tennessee carries 7,251 vehicles per day, essentially matching the national average of 6,986. Network-wide, Tennessee accounts for about 2.4% of the national total of vehicle-miles. By volume, Tennessee's 7,251 vehicles per day outpaces 66% of states nationwide.

At 32.1 minutes, the average travel time matches the national level closely. On travel time, Tennessee runs shorter than 82% of states nationwide.

The congestion ratio of 16.1% runs slightly lower than the national level (15% lower) - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Tennessee

Trafficvehicles per day13,802
Trucks15.6%
Average travel time37.8 min
Congestion ratio30.9%
Drivers’ average age46.9 yrs
Drivers’ average income$74,800

A little more than half of the driving in Tennessee happens on highways: 56% of all vehicle-miles. The average highway carries 13,802 vehicles per day, 112% more than the average non-highway road in the same area, which carries 6,517 vehicles per day.

Highways make up 26% of the monitored road miles (6,772 miles, 41,563 segments), so they carry more than their share: 101,605,912 vehicle-miles traveled per day (≈37.1 billion per year).

By highway travel volume, Tennessee outranks 82% of states nationwide.

More highway trucks than 82% of states nationwide

The concentration of trucks on highways (15.6%) is 19% higher than the national average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.

Tennessee's highway truck share (15.6%) is higher than 76% of states nationwide. Tennessee's highway truck count is higher than 82% of states nationwide, at roughly 2,155 trucks per day.

non-highway traffic icon

Non-highway Traffic in Tennessee

Trafficvehicles per day6,517
Trucks5.8%
Average travel time31.5 min
Congestion ratio15.4%
Drivers’ average age45.1 yrs
Drivers’ average income$80,993

A significant share of driving in Tennessee, 44% of vehicle-miles, happens on local roads. A typical local road sees 6,517 vehicles per day.

Local roads make up 74% of the monitored road miles (19,195 miles in 370,920 segments) but carry less than their share of travel: 78,416,573 vehicle-miles traveled per day (≈28.6 billion per year). About 1 in 17 vehicles on non-highway roads is a truck (5.8%).

Drivers from lower-income areas than 74% of states nationwide

Compared to highways, non-highway routes see 63% fewer trucks by share.

At 16% lower than the national level, the non-highway congestion ratio of 15.4% signals easier movement on local roads.

Trip origins here have lower average income than 74% of states nationwide. 68% of states nationwide have an older driver population than Tennessee.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and a long afternoon plateau from 3:00 PM to 7:00 PM, with volumes reaching approximately 67% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 19% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
Traffic is nearly flat through the year: even April–June, the busiest stretch, runs only +3% versus the annual average.
Lowest month:
January is the quietest month, with volumes -7% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Tennessee, the peak hour concentrates about 7% of the day's traffic, and traffic stays steady through the year (+3% in high season).

Tennessee vs. United States Traffic Comparison

Of the four measures, truck share differs most: Tennessee runs 21% above the United States average. Its highway truck share is also 19% above.

MetricTennesseeUnited States averageDifference
Traffic7,2516,986+3.8%
Truck % (Total Traffic)11.3%9.3%+21.3%
Truck % (Highway)15.6%13.1%+19.4%
Avg. Travel Time32.1 min33.3 min-3.7%

How Tennessee compares

Tennessee against nearby states

Tennessee tracks the 4 states around it closely - no measure in this table sets it far apart from the states immediately next to it, though it has the second busiest roads of the five.

Tennessee and the 4 nearest states by centroid distance, with the United States average for scale.
StateAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Tennessee7,25111.3%180,022,48032.1 min16.1%
Kentucky4,69612.1%118,801,45431.7 min14.7%
Alabama5,93210.6%141,682,08931.8 min15.5%
Georgia7,3989.7%279,644,55733.6 min16.8%
Mississippi5,31911.1%99,147,18030.7 min15.2%
United States average6,9869.3%N/A33.3 min18.9%

Busiest counties in Tennessee

Tennessee's three busiest counties account for 28.2% of all the vehicle-miles measured in the state.

Ranked by daily vehicle-miles, across the 95 counties in Tennessee with a published traffic page. Vehicle-miles is total travel, so this ranks by traffic MOVED rather than by how busy a typical road is.
CountyDaily vehicle-milesAverage daily trafficTruck shareRoad miles
1. Shelby County19,549,1349,0798.5%1,843
2. Davidson County19,206,77810,9909.8%1,116
3. Knox County12,073,91110,8609.8%843

Most truck-intensive counties in Tennessee

Together, those five counties carry just 6.0% of the truck vehicle-miles driven in the state. Truck share says where trucks dominate the mix; it does not say where the freight is.

Ranked by truck share of all traffic, across the same 95 counties, shown with the traffic volume that share is measured against.
CountyTruck shareTruck share on highwaysAverage daily trafficDaily vehicle-miles
1. Marion County23.0%27.3%4,2591,796,753
2. Grundy County20.8%26.0%3,572831,297
3. Haywood County20.5%25.8%2,4931,332,816
4. Decatur County20.4%21.8%2,686684,664
5. Smith County19.2%21.7%3,8641,177,177

Asking the same question of truck vehicle-miles gives a different answer - Davidson County, Shelby County, Knox County, Hamilton County and Rutherford County, together 31.2% of all truck travel in Tennessee.

Busiest roads in Tennessee

On their busiest stretches, the three busiest roads in Tennessee carry 160,350 vehicles a day on average, 22.1 times the typical road in the state (7,251).

I 24 in Davidson County is the busiest road, at 211,830 vehicles a day, 24,082 of them trucks (11.4%). No other road comes close: I 65 in Davidson County, in second place, carries 136,517. It tops the truck ranking too, with the most trucks.

Trucks make up 24.2% of traffic on I 40 in Loudon County and 22.3% on W B Fowler Senior Expressway in Shelby County, against 11.3% across all roads in the state.

I 40 in Loudon County carries longer journeys than most roads here, with a median trip of 51.5 minutes against 32.1 state-wide.

Drivers on I 65 in Davidson County come from neighborhoods with an average household income of $115,384, 48% above the state average of $77,734.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 24Davidson County · Motorway · 211,830vehicles24,082trucks · 11.4%
Road class
Motorway
Congestion ratio
114.4%
Median trip time
41.1 min
Drivers’ median age
42.8 yrs
Drivers’ average income
$85,457

I 24 is one of the more congested roads here: trips take 114% longer than at free-flow speed, against 16% state-wide.

2I 65Davidson County · Motorway · 136,517vehicles13,966trucks · 10.2%
Road class
Motorway
Congestion ratio
70.0%
Median trip time
38.8 min
Drivers’ median age
43.6 yrs
Drivers’ average income
$115,384

I 65 carries 18.8 times the state average on its busiest stretch, where the median trip lasts 38.8 minutes.

3Avron B Fogelman ExpresswayShelby County · Motorway · 132,705vehicles13,132trucks · 9.9%
Road class
Motorway
Congestion ratio
60.8%
Median trip time
33.2 min
Drivers’ median age
44.4 yrs
Drivers’ average income
$82,763

At 18.3 times the state average, Avron B Fogelman Expressway draws drivers from neighborhoods averaging $82,763 in household income.

4I 40Knox County · Motorway · 127,468vehicles15,901trucks · 12.5%
Road class
Motorway
Congestion ratio
85.5%
Median trip time
42.1 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$83,718

A main artery: I 40's busiest stretch carries 17.6 times the state average; trucks are 12.5% of it, above the state-wide 11.3%.

5I 40Davidson County · Motorway · 113,797vehicles14,329trucks · 12.6%
Road class
Motorway
Congestion ratio
68.3%
Median trip time
37.0 min
Drivers’ median age
43.0 yrs
Drivers’ average income
$89,738

I 40 is a trunk route for the state, carrying 15.7 times the state average on its busiest stretch; trucks are 12.6% of it, above the state-wide 11.3%.

6I 24Hamilton County · Motorway · 100,415vehicles14,249trucks · 14.2%
Road class
Motorway
Congestion ratio
92.2%
Median trip time
43.0 min
Drivers’ median age
46.9 yrs
Drivers’ average income
$76,159

Delays build on I 24: its congestion ratio of 92% over free-flow time is well above the state's 16%.

7TN 153Hamilton County · Motorway · 94,473vehicles8,622trucks · 9.1%
Road class
Motorway
Congestion ratio
61.8%
Median trip time
34.6 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$80,294

TN 153 carries 13.0 times the state average at its busiest, 8,622 of them trucks (9.1%, below the state-wide 11.3%).

8Doctor Martin Luther King Junior ExpresswayShelby County · Motorway · 92,968vehicles13,395trucks · 14.4%
Road class
Motorway
Congestion ratio
62.8%
Median trip time
35.2 min
Drivers’ median age
44.5 yrs
Drivers’ average income
$70,903

Doctor Martin Luther King Junior Expressway carries 12.8 times the state average on its busiest stretch, where the median trip lasts 35.2 minutes.

9Four-Forty ParkwayDavidson County · Motorway · 91,808vehicles10,182trucks · 11.1%
Road class
Motorway
Congestion ratio
59.7%
Median trip time
36.9 min
Drivers’ median age
42.5 yrs
Drivers’ average income
$99,776

At 12.7 times the state average, Four-Forty Parkway draws drivers from neighborhoods averaging $99,776 in household income.

10Bishop J O Patterson Senior Memorial ParkwayShelby County · Motorway · 86,431vehicles12,534trucks · 14.5%
Road class
Motorway
Congestion ratio
48.3%
Median trip time
37.3 min
Drivers’ median age
44.4 yrs
Drivers’ average income
$73,878

A main artery: Bishop J O Patterson Senior Memorial Parkway's busiest stretch carries 11.9 times the state average; trucks are 14.5% of it, above the state-wide 11.3%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 24Davidson County · Motorway · #1 by traffic211,830vehicles24,082trucks · 11.4%
2I 40Loudon County · Motorway · 76,454vehicles18,477trucks · 24.2%
Road class
Motorway
Congestion ratio
60.3%
Median trip time
51.5 min
Drivers’ median age
48.1 yrs
Drivers’ average income
$78,993

I 40 is a trunk route for the state, carrying 10.5 times the state average on its busiest stretch; trucks are 24.2% of it, above the state-wide 11.3%.

3I 40Sevier County · Motorway · 72,776vehicles15,964trucks · 21.9%
Road class
Motorway
Congestion ratio
50.9%
Median trip time
51.5 min
Drivers’ median age
47.5 yrs
Drivers’ average income
$67,203

Drivers on I 40 are on long journeys, a median 51.5 minutes against 32.1 state-wide: a through route more than a local street.

4I 40Knox County · Motorway · #4 by traffic127,468vehicles15,901trucks · 12.5%
5W B Fowler Senior ExpresswayShelby County · Motorway · 65,520vehicles14,616trucks · 22.3%
Road class
Motorway
Congestion ratio
53.7%
Median trip time
36.3 min
Drivers’ median age
44.1 yrs
Drivers’ average income
$72,380

W B Fowler Senior Expressway carries 9.0 times the state average at its busiest, 14,616 of them trucks (22.3%, above the state-wide 11.3%).

6I 40Davidson County · Motorway · #5 by traffic113,797vehicles14,329trucks · 12.6%
7I 24Hamilton County · Motorway · #6 by traffic100,415vehicles14,249trucks · 14.2%
8I 65Davidson County · Motorway · #2 by traffic136,517vehicles13,966trucks · 10.2%
9Doctor Martin Luther King Junior ExpresswayShelby County · Motorway · #8 by traffic92,968vehicles13,395trucks · 14.4%
10Avron B Fogelman ExpresswayShelby County · Motorway · #3 by traffic132,705vehicles13,132trucks · 9.9%
How to read these road counts
  • The first number is AADT, annual average daily traffic: the vehicles passing a point on an average day, both directions combined and trucks included. On a divided highway both carriageways are added together.
  • Traffic changes along a road, with more near interchanges and towns and less in open country. Every figure for a road describes its busiest stretch in the county, so the two rankings show the same numbers for the same road.
  • The second number is the trucks on that stretch, a part of its AADT. The bar splits the AADT into cars and light vehicles (blue) and trucks (amber).
  • See segment-level AADT for any road on TrafficZoom.

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)

Road sensor networks and traffic counters

Historical traffic pattern databases

Public traffic count programs published by the

TennesseeDepartment of Transportation

Demographic Baseline for O-D Modeling

U.S. Census Bureau
All metrics represent estimates based on statistical modeling and are intended for strategic planning purposes.
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Data current as of:
Q3 2026

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States near Tennessee

The same traffic breakdown for the states closest to Tennessee.

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.

Counties in Tennessee

Traffic counts, truck share, congestion and driver demographics for each of the 95 counties TrafficZoom measures in Tennessee.