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Traffic heat map of DeKalb County, Tennessee: 142 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Broad Street

DeKalb County, Tennessee Traffic Counts

Traffic analytics for DeKalb County, Tennessee, calculated from real-world mobile and sensor networks on 2,386 road segments (142 road miles, about 313 ft each). Trips here are among the 5 longest of any county in Tennessee. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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Total Traffic Volume & Performance in DeKalb County, Tennessee

Traffic

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

vehicles per day3,557
Trucks

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

8.4%
Average travel time

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

37.1 min
Congestion ratio

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

9.6%
Drivers’ average age

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

48.2 yrs
Drivers’ average income

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

$51,876

Our data shows 3,557 vehicles per day on the average road in DeKalb County, Tennessee, and 407,440 vehicle-miles traveled per day (≈149 million per year) across its 142 miles of monitored roads. Trucks are a smaller part of the mix than across Tennessee: 8.4% against 11.3%.

Longer trips than 96% of counties in Tennessee

DeKalb's average daily traffic volume is 51% lower than the state average - 3,557 vehicles per day against 7,251 - suggesting less traffic load per road - very light roads: easy truck access, but little passing trade for roadside retail. Across the whole network, that travel is about 0.2% of Tennessee's statewide total. By volume, DeKalb's 3,557 vehicles per day trails 60% of counties in Tennessee.

Journey times run 16% higher than the state level, at 37.1 minutes on average. On travel time, DeKalb runs longer than 96% of counties in Tennessee.

Congestion runs 40% lower than the state level, at a ratio of 9.6%, which means smoother traffic flow - fewer delays make delivery windows more reliable.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In DeKalb County, Tennessee, the peak hour concentrates about 7% of the day's traffic.

DeKalb County vs. Tennessee Traffic Comparison

DeKalb County's biggest difference from the Tennessee average is its average daily traffic per road, 51% below it. Its truck share is also 26% below.

MetricDeKalb CountyTennessee averageDifference
Traffic3,5577,251-50.9%
Truck % (Total Traffic)8.4%11.3%-26.0%
Avg. Travel Time37.1 min32.1 min+15.7%

How DeKalb County compares

Trips in DeKalb County run longer than in any nearby county

Nothing in this table sets DeKalb County sharply apart from the 4 areas nearest to it, though it has the fourth busiest roads of the five. The same kind of road, just less of it: traffic per road matches the areas around it while the network itself is smaller.

DeKalb County and the 4 nearest county-level areas by centroid distance, with the Tennessee average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
DeKalb County3,5578.4%407,44037.1 min9.6%
Cannon County, Tennessee3,2828.0%294,35933.3 min11.3%
Smith County, Tennessee3,86419.2%1,177,17729.7 min11.5%
Warren County, Tennessee3,7098.4%757,95832.0 min9.1%
White County, Tennessee3,72810.1%607,29532.7 min9.2%
Tennessee average7,25111.3%N/A32.1 min16.1%

DeKalb County ranked within Tennessee

Average travel time places DeKalb County #5 of 95 in Tennessee - the top quarter of the state.

DeKalb County ranked among 95 county-level areas in Tennessee (1 = highest).
MeasureDeKalb CountyTennessee rank
Traffic volume (AADT)3,557#57 of 95
Average travel time37.1 min#5 of 95
Average driver income$51,876#83 of 95
Average driver age48.2 yrs#51 of 95

The two ends of this table sit far apart: #5 of 95 on average travel time, against #83 of 95 on average driver income.

Busiest roads in DeKalb County, Tennessee

The three busiest roads in DeKalb County average 10,909 vehicles a day, 3.1 times the county average of 3,557 across all its monitored roads.

Broad Street leads with 12,400 vehicles a day, 992 of them trucks (8.0%). Old Nashville Highway carries the most trucks, 1,070 a day (10.0% of its traffic), although it ranks #2 for all traffic.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Broad StreetPrimary road · 12,400vehicles992trucks · 8.0%
Road class
Primary road
Congestion ratio
13.7%
Median trip time
35.4 min
Drivers’ median age
47.7 yrs
Drivers’ average income
$46,475

The busiest stretch of Broad Street carries 3.5 times the county average; trucks are 8.0% of it, in line with the county-wide 8.4%.

2Old Nashville HighwayPrimary road · 10,687vehicles1,070trucks · 10.0%
Road class
Primary road
Congestion ratio
12.3%
Median trip time
40.6 min
Drivers’ median age
49.0 yrs
Drivers’ average income
$47,557

On its busiest stretch, Old Nashville Highway carries 3.0 times the county average; trucks are 10.0% of it, above the county-wide 8.4%.

3Nashville HighwayPrimary road · 9,639vehicles924trucks · 9.6%
Road class
Primary road
Median trip time
43.5 min
Drivers’ median age
48.6 yrs
Drivers’ average income
$48,461

Nashville Highway peaks at 9,639 vehicles a day, 2.7 times the county average; trucks are 9.6% of it, above the county-wide 8.4%.

4Congress BoulevardPrimary road · 7,441vehicles627trucks · 8.4%
Road class
Primary road
Congestion ratio
17.0%
Median trip time
34.0 min
Drivers’ median age
48.0 yrs
Drivers’ average income
$48,799

Travel on Congress Boulevard's busiest stretch runs 17% over free-flow time, against 10% across the county, so expect slower peak hours.

5Cookeville HighwayPrimary road · 5,721vehicles491trucks · 8.6%
Road class
Primary road
Congestion ratio
13.6%
Median trip time
38.5 min
Drivers’ median age
47.2 yrs
Drivers’ average income
$52,316

Cookeville Highway carries 61% more than the county average at its busiest, 491 of them trucks (8.6%, in line with the county-wide 8.4%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1Old Nashville HighwayPrimary road · #2 by traffic10,687vehicles1,070trucks · 10.0%
2Broad StreetPrimary road · #1 by traffic12,400vehicles992trucks · 8.0%
3Nashville HighwayPrimary road · #3 by traffic9,639vehicles924trucks · 9.6%
4US 70Primary road · 5,352vehicles693trucks · 12.9%
Road class
Primary road
Congestion ratio
6.1%
Median trip time
32.7 min
Drivers’ median age
49.8 yrs
Drivers’ average income
$55,195

US 70 carries 50% more than the county average on its busiest stretch, where the median trip lasts 32.7 minutes.

5Congress BoulevardPrimary road · #4 by traffic7,441vehicles627trucks · 8.4%
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

DeKalbDepartment 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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Counties near DeKalb County

The same traffic breakdown for the areas closest to DeKalb County, Tennessee.

Need segment-level traffic data?

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