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Traffic heat map of Traill County, North Dakota: 274 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 29 and 3rd Street Southeast

Traill County, North Dakota Traffic Counts

How busy are the roads of Traill County, North Dakota? We measure 274 road miles, divided into 1,590 segments, with multi-sourced, cross-verified mobile and sensor data. Trips here are the shortest of any county in North Dakota, a median 28.5 minutes. The breakdown below covers volume, trucks, congestion and driver profiles for retailers, logistics planners and engineers.
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 Traill County, North Dakota

Traffic

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

vehicles per day976
Trucks

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

12.2%
Average travel time

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

28.5 min
Congestion ratio

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

6.2%
Drivers’ average age

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

43.4 yrs
Drivers’ average income

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

$91,982

The average monitored road in Traill County, North Dakota carries 976 vehicles per day. Across its 274 miles of monitored roads, that adds up to 335,355 vehicle-miles traveled per day (≈122 million per year). About 1 in 8 vehicles is a truck, in line with North Dakota (11.1%).

The shortest trips of any county in North Dakota

Traill sees 55% lower average daily traffic volume than the state average (976 vehicles per day against 2,174), suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Across the whole network, that travel is about 1.9% of North Dakota's statewide total. Traill carries more traffic than 58% of counties in North Dakota.

At 28.5 minutes, the average travel time is 23% lower than the state level. At 28.5 minutes, Traill also has the lowest average travel time in North Dakota.

The congestion ratio of 6.2% is 42% lower, pointing to smoother traffic flow than the state level - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Traill County, North Dakota

Trafficvehicles per day3,045
Trucks14.7%
Average travel time54.0 min
Congestion ratio7.1%
Drivers’ average age39.5 yrs
Drivers’ average income$93,319

Highways carry more than half of all travel in Traill County, North Dakota (62% of vehicle-miles). The average highway carries 3,045 vehicles per day, 235% more than the average non-highway road in the same area, which carries 908 vehicles per day.

With 23% of the road miles (63 miles in 50 segments), highways punch above their length, carrying 207,384 vehicle-miles traveled per day (≈75.7 million per year).

By highway travel volume, Traill outranks 68% of counties in North Dakota.

More highway trucks than 85% of counties in North Dakota

Highway truck concentration here (14.7%) closely tracks the state average for similar road classifications. The highway traffic mix is typical for North Dakota: neither freight- nor commuter-dominated.

53% of counties in North Dakota see a higher highway truck share than Traill's 14.7%. Traill's highway truck count is higher than 85% of counties in North Dakota, at roughly 447 trucks per day.

non-highway traffic icon

Non-highway Traffic in Traill County, North Dakota

Trafficvehicles per day908
Trucks8.1%
Average travel time27.7 min
Congestion ratio6.2%
Drivers’ average age49.7 yrs
Drivers’ average income$89,156

A significant share of driving in Traill County, North Dakota, 38% of vehicle-miles, happens on local roads. On the average non-highway road, that comes to 908 vehicles per day.

Local roads make up 77% of the monitored road miles (211 miles in 1,540 segments) but carry less than their share of travel: 127,970 vehicle-miles traveled per day (≈46.7 million per year). The truck share on non-highway roads is 8.1%.

Drivers from higher-income areas than 90% of counties in North Dakota

The concentration of trucks on non-highway roads is 45% lower than on highways.

The non-highway congestion ratio of 6.2% is 43% lower than the state level, suggesting more efficient local mobility than the state average.

Traill's average driver income is higher than 90% of counties in North Dakota. 81% of counties in North Dakota have an older driver population than Traill.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
A long morning plateau from 7:00 AM to 12:00 PM and a long afternoon plateau from 3:00 PM to 7:00 PM, with volumes reaching approximately 83% higher than the daily average.
Weekend traffic:
Weekend traffic is about as busy as on weekdays (-2%): leisure and through trips largely replace the commute.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
February–April is the high season, with volumes +37% versus the annual average.
Lowest month:
December is the quietest month, with volumes -31% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Traill County, North Dakota, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +37% in high season.

Traill County vs. North Dakota Traffic Comparison

Of the four measures, average daily traffic per road differs most: Traill County runs 55% below the North Dakota average. Its average travel time is also 23% below.

MetricTraill CountyNorth Dakota averageDifference
Traffic9762,174-55.1%
Truck % (Total Traffic)12.2%11.1%+9.8%
Truck % (Highway)14.7%14.5%+1.3%
Avg. Travel Time28.5 min37.0 min-23.0%

How Traill County compares

Traill County has a higher truck share than any nearby county

Compared with its 4 closest neighbours, Traill County sees 34.3% shorter typical trips and carries 46.0% less traffic on a typical road; it has the third busiest roads of the five. It is the quiet one of the group - below the areas around it on volume, total travel and trip length alike.

Traill County and the 4 nearest county-level areas by centroid distance, with the North Dakota average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Traill County97612.2%335,35528.5 min6.2%
Steele County, North Dakota5549.3%58,22851.3 min2.5%
Polk County, Minnesota1,3127.7%878,88634.7 min5.3%
Norman County, Minnesota8338.6%224,40351.7 min3.9%
Cass County, North Dakota4,5217.2%2,717,47635.8 min17.0%
North Dakota average2,17411.1%N/A37.0 min10.6%

Traill County ranked within North Dakota

No county-level area in North Dakota records a lower average travel time than Traill County.

Traill County ranked among 53 county-level areas in North Dakota (1 = highest); measures without data in every county rank a smaller field, down to 35.
MeasureTraill CountyNorth Dakota rank
Traffic volume (AADT)976#23 of 53
Highway vehicle-miles per day207,384#12 of 35
Truck share on highways14.7%#19 of 35
Highway trucks per day447#6 of 35
Average travel time28.5 min#53 of 53
Average driver income$91,982#6 of 53
Average driver age43.4 yrs#43 of 53

The two ends of this table sit far apart: #6 of 53 on average driver income, against #53 of 53 on average travel time.

Busiest roads in Traill County, North Dakota

On their busiest stretches, the three busiest roads in Traill County carry 4,524 vehicles a day on average, 4.6 times the typical road in the county (976).

I 29 leads with 6,618 vehicles a day, 972 of them trucks (14.7%). That is 88% more than the next road, 3rd Street Southeast (3,511). It tops the truck ranking too, with the most trucks.

I 29 carries longer journeys than most roads here, with a median trip of 54.0 minutes against 28.5 county-wide.

Caledonia Avenue skews older: its drivers' median age is 50.7, compared with 43.4 county-wide.

Few trucks use Main Street: 6.0% of its traffic, under half the county's 12.2%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 29Motorway · 6,618vehicles972trucks · 14.7%
Road class
Motorway
Congestion ratio
7.1%
Median trip time
54.0 min
Drivers’ median age
39.5 yrs
Drivers’ average income
$93,319

I 29 carries 6.8 times the county average on its busiest stretch, where the median trip lasts 54.0 minutes.

23rd Street SoutheastPrimary road · 3,511vehicles227trucks · 6.5%
Road class
Primary road
Congestion ratio
12.1%
Median trip time
22.9 min
Drivers’ median age
48.3 yrs
Drivers’ average income
$80,828

On its busiest stretch, 3rd Street Southeast carries 3.6 times the county average; trucks are 6.5% of it, below the county-wide 12.2%.

3Main StreetPrimary road · 3,443vehicles208trucks · 6.0%
Road class
Primary road
Median trip time
26.0 min
Drivers’ median age
49.2 yrs
Drivers’ average income
$86,200

Main Street peaks at 3,443 vehicles a day, 3.5 times the county average; trucks are 6.0% of it, below the county-wide 12.2%.

43rd Street SouthwestPrimary road · 3,357vehicles192trucks · 5.7%
Road class
Primary road
Congestion ratio
10.1%
Median trip time
27.2 min
Drivers’ median age
47.8 yrs
Drivers’ average income
$83,752

3rd Street Southwest carries 3.4 times the county average at its busiest, 192 of them trucks (5.7%, below the county-wide 12.2%).

5Caledonia AvenueTertiary road · 3,242vehicles118trucks · 3.6%
Road class
Tertiary road
Congestion ratio
7.9%
Median trip time
27.5 min
Drivers’ median age
50.7 yrs
Drivers’ average income
$84,813

Caledonia Avenue carries 3.3 times the county average on its busiest stretch, where the median trip lasts 27.5 minutes.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 29Motorway · #1 by traffic6,618vehicles972trucks · 14.7%
23rd Street SoutheastPrimary road · #2 by traffic3,511vehicles227trucks · 6.5%
3Main StreetPrimary road · #3 by traffic3,443vehicles208trucks · 6.0%
43rd Street SouthwestPrimary road · #4 by traffic3,357vehicles192trucks · 5.7%
5ND 200Primary road · 2,934vehicles182trucks · 6.2%
Road class
Primary road
Congestion ratio
7.9%
Median trip time
28.1 min
Drivers’ median age
48.6 yrs
Drivers’ average income
$90,254

At 3.0 times the county average, ND 200 draws drivers from neighborhoods averaging $90,254 in household income.

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

TraillDepartment 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 Traill County

The same traffic breakdown for the areas closest to Traill County, North Dakota.

Need segment-level traffic data?

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