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Traffic heat map of Union County, Tennessee: 97 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Maynardville Pike

Union County, Tennessee Traffic Counts

Our Union County, Tennessee traffic data covers 957 road segments over 97 road miles, with an average segment of just 535 ft. Its busiest road, Maynardville Pike, carries 14,952 vehicles a day, 3.4 times the average road. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
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 Union County, Tennessee

Traffic

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

vehicles per day4,387
Trucks

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

7.3%
Average travel time

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

33.6 min
Congestion ratio

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

11.9%
Drivers’ average age

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

48.9 yrs
Drivers’ average income

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

$62,875

Our data shows 4,387 vehicles per day on the average road in Union County, Tennessee, and 347,215 vehicle-miles traveled per day (≈127 million per year) across its 97 miles of monitored roads. Trucks are a smaller part of the mix than across Tennessee: 7.3% against 11.3%.

Longer trips than 71% of counties in Tennessee

Union sees 40% lower average daily traffic volume than the state average (4,387 vehicles per day against 7,251), suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. Across the whole network, that travel is about 0.2% of Tennessee's statewide total. Union carries more traffic than 55% of counties in Tennessee.

At 33.6 minutes, the average travel time matches the state level closely. Its average travel time of 33.6 minutes is longer than 71% of counties in Tennessee.

The congestion ratio of 11.9% is 26% lower, pointing to smoother traffic flow than the state level - travel times are easy to plan around for scheduled deliveries.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Union County, Tennessee, the peak hour concentrates about 8% of the day's traffic.

Union County vs. Tennessee Traffic Comparison

The average daily traffic per road sets Union County apart: 40% below the Tennessee average. Its truck share is also 36% below.

MetricUnion CountyTennessee averageDifference
Traffic4,3877,251-39.5%
Truck % (Total Traffic)7.3%11.3%-35.6%
Avg. Travel Time33.6 min32.1 min+4.7%

How Union County compares

Union County moves the least traffic of its nearby counties

Set against the average of the 4 areas nearest to it, Union County moves 9.5% of the total daily travel and carries 31.4% less traffic on a typical road; it has the fourth busiest roads of the five. Quieter and more local than the areas around it on both counts: less traffic, and less of what there is arriving by truck.

Union 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
Union County4,3877.3%347,21533.6 min11.9%
Claiborne County, Tennessee5,4818.9%658,09031.6 min20.0%
Grainger County, Tennessee3,01310.6%510,27932.8 min8.0%
Campbell County, Tennessee6,22218.5%1,428,06037.7 min13.7%
Knox County, Tennessee10,8609.8%12,073,91131.9 min22.1%
Tennessee average7,25111.3%N/A32.1 min16.1%

Union County ranked within Tennessee

Union County ranked among 95 county-level areas in Tennessee (1 = highest).
MeasureUnion CountyTennessee rank
Traffic volume (AADT)4,387#43 of 95
Average travel time33.6 min#28 of 95
Average driver income$62,875#38 of 95
Average driver age48.9 yrs#39 of 95

Busiest roads in Union County, Tennessee

Traffic concentrates on a few corridors: the three busiest roads average 13,654 vehicles a day, against 4,387 on the average road in Union County.

Maynardville Pike is the busiest road, at 14,952 vehicles a day, 1,430 of them trucks (9.6%). It tops the truck ranking too, with the most trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Maynardville PikePrimary road · 14,952vehicles1,430trucks · 9.6%
Road class
Primary road
Congestion ratio
21.4%
Median trip time
37.9 min
Drivers’ median age
47.9 yrs
Drivers’ average income
$65,941

At 3.4 times the county average, Maynardville Pike draws drivers from neighborhoods averaging $65,941 in household income.

2Maynardville HighwayPrimary road · 13,958vehicles1,075trucks · 7.7%
Road class
Primary road
Congestion ratio
31.0%
Median trip time
33.6 min
Drivers’ median age
48.6 yrs
Drivers’ average income
$65,461

Travel on Maynardville Highway's busiest stretch runs 31% over free-flow time, against 12% across the county, so expect slower peak hours.

3Main StreetPrimary road · 12,054vehicles831trucks · 6.9%
Road class
Primary road
Congestion ratio
27.4%
Median trip time
33.5 min
Drivers’ median age
49.0 yrs
Drivers’ average income
$63,053

Main Street is one of the more congested roads here: trips take 27% longer than at free-flow speed, against 12% county-wide.

4Tazewell PikeSecondary road · 3,739vehicles259trucks · 6.9%
Road class
Secondary road
Congestion ratio
7.5%
Median trip time
29.8 min
Drivers’ median age
50.3 yrs
Drivers’ average income
$60,253

Even at its busiest, Tazewell Pike carries 15% less than the county average; trucks are 6.9% of it, below the county-wide 7.3%.

5SR 61Secondary road · 3,394vehicles216trucks · 6.4%
Road class
Secondary road
Congestion ratio
8.5%
Median trip time
30.3 min
Drivers’ median age
49.7 yrs
Drivers’ average income
$59,948

SR 61 is a quieter road: its busiest stretch carries 23% less than the county average; trucks are 6.4% of it, below the county-wide 7.3%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Maynardville PikePrimary road · #1 by traffic14,952vehicles1,430trucks · 9.6%
2Maynardville HighwayPrimary road · #2 by traffic13,958vehicles1,075trucks · 7.7%
3Main StreetPrimary road · #3 by traffic12,054vehicles831trucks · 6.9%
4Tazewell PikeSecondary road · #4 by traffic3,739vehicles259trucks · 6.9%
5SR 61Secondary road · #5 by traffic3,394vehicles216trucks · 6.4%
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

UnionDepartment 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 Union County

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

Need segment-level traffic data?

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