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TrafficThe average number of vehicles that travel each day over any road in the road network. | vehicles per day895 |
|---|---|
TrucksThe percentage of the total traffic volume composed of heavy vehicles. | 16.4% |
Average travel timeThe average time of travel averaged among all vehicles traveling on the road network. | 51.4 min |
Congestion ratioThe rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 4.4% |
Drivers’ average ageAverage age of residents in the geographic areas where the vehicle trips originated. | 54.4 yrs |
Drivers’ average incomeAverage income of residents in the geographic areas where the vehicle trips originated. | $70,241 |
Our data shows 895 vehicles per day on the average road in Carter County, Montana, and 117,940 vehicle-miles traveled per day (≈43.0 million per year) across its 98 miles of monitored roads. Trucks are 16.4% of traffic, more than the 11.7% across Montana.
At 895 vehicles per day, the average monitored road in Carter carries 79% less traffic than the state average of 4,202, suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 0.4% of Montana's statewide total of vehicle-miles. By volume, Carter's 895 vehicles per day trails 87% of counties in Montana.
At 51.4 minutes, the average travel time is 42% higher than the state level. 89% of counties in Montana have a shorter average travel time than Carter's 51.4 minutes.
Congestion runs 64% lower than the state level, at a ratio of 4.4%, which means smoother traffic flow - free-flowing roads make scheduled deliveries highly predictable.
| Traffic | vehicles per day2,048 |
|---|---|
| Trucks | 15.9% |
| Average travel time | 58.6 min |
| Congestion ratio | 4.4% |
| Drivers’ average age | 54.0 yrs |
| Drivers’ average income | $72,296 |
The vast majority of driving in Carter County, Montana happens on highways: 82% of all vehicle-miles. The average highway carries 2,048 vehicles per day, 420% more than the average non-highway road in the same area, which carries 394 vehicles per day.
With 41% of the road miles (41 miles in 56 segments), highways punch above their length, carrying 96,295 vehicle-miles traveled per day (≈35.1 million per year).
Highway truck concentration here runs 6% higher than the state average, at 15.9%. The highway traffic mix is typical for Montana: neither freight- nor commuter-dominated.
Carter's highway truck share (15.9%) is higher than 57% of counties in Montana. 50% of counties in Montana see fewer highway trucks per day than Carter's roughly 326.
| Traffic | vehicles per day394 |
|---|---|
| Trucks | 18.6% |
| Average travel time | 48.2 min |
| Drivers’ average age | 60.2 yrs |
| Drivers’ average income | $50,789 |
Local roads carry a smaller share of travel in Carter County, Montana, 18% of vehicle-miles; most driving happens on highways. The average non-highway road carries 394 vehicles per day.
Spread over 58 miles and 129 segments, 59% of the road network, local roads carry a lighter load per mile: 21,646 vehicle-miles traveled per day (≈7.9 million per year). About 1 in 5 vehicles on non-highway roads is a truck (18.6%).
Unusually, compared to highways, non-highway routes see 17% more trucks by share.
Trip origins here have higher average income than 64% of counties in Montana. The driver population here skews older than 76% of counties in Montana.
The average daily traffic per road sets Carter County apart: 79% below the Montana average. Its average travel time, by contrast, is 42% above.
| Metric | Carter County | Montana average | Difference |
|---|---|---|---|
| Traffic | 895 | 4,202 | -78.7% |
| Truck % (Total Traffic) | 16.4% | 11.7% | +40.7% |
| Truck % (Highway) | 15.9% | 15.0% | +6.3% |
| Avg. Travel Time | 51.4 min | 36.2 min | +42.0% |
Carter County tracks the 4 areas around it closely - no measure in this table sets it far apart from the areas immediately next to it, though it has the fourth busiest roads of the five. Quiet roads and long journeys - a rural pattern, where the distance between destinations rather than the traffic on the way is what takes the time.
| Area | Average daily traffic | Truck share | Daily vehicle-miles | Average travel time | Congestion ratio |
|---|---|---|---|---|---|
| Carter County | 895 | 16.4% | 117,940 | 51.4 min | 4.4% |
| Fallon County, Montana | 1,059 | 10.5% | 55,084 | 39.9 min | 4.1% |
| Harding County, South Dakota | 775 | 16.8% | 82,684 | 53.9 min | N/A |
| Powder River County, Montana | 1,968 | 17.5% | 167,760 | 44.2 min | 6.3% |
| Bowman County, North Dakota | 1,046 | 11.5% | 86,201 | 36.8 min | 3.9% |
| Montana average | 4,202 | 11.7% | N/A | 36.2 min | 12.3% |
Average travel time places Carter County #7 of 56 in Montana - the top quarter of the state.
| Measure | Carter County | Montana rank |
|---|---|---|
| Traffic volume (AADT) | 895 | #49 of 56 |
| Highway vehicle-miles per day | 96,295 | #38 of 47 |
| Truck share on highways | 15.9% | #21 of 47 |
| Highway trucks per day | 326 | #24 of 47 |
| Average travel time | 51.4 min | #7 of 56 |
| Average driver income | $70,241 | #21 of 56 |
| Average driver age | 54.4 yrs | #14 of 56 |
Carter County ranks #7 of 56 on average travel time but #49 of 56 on average daily traffic volume - the two describe the same roads and are worth reading together rather than either on its own.
On their busiest stretches, the three busiest roads in Carter County carry 1,108 vehicles a day on average, 24% more than the typical road in the county (895).
US 212 leads with 2,369 vehicles a day, 377 of them trucks (15.9%). That is 4.9 times the next road, MT 7 (481). It tops the truck ranking too, with the most trucks.
Trucks make up 73.8% of traffic on Belle Creek Road and 50.9% on Box Elder Road, against 16.4% across all roads in the county.
Trips using Hammond Road are long: a median of 90.0 minutes against 51.4 county-wide, the mark of a through route.
MT 7 draws drivers from lower-income areas: their neighborhoods average $50,789 in household income, 28% below the county's $70,241.
US 212 carries 2.6 times the county average on its busiest stretch, where the median trip lasts 58.3 minutes.
MT 7 is a quieter road: its busiest stretch carries 46% less than the county average; trucks are 11.6% of it, below the county-wide 16.4%.
Drivers on Box Elder Road are on long journeys, a median 72.0 minutes against 51.4 county-wide: a through route more than a local street.
Even at its busiest, S-326 carries 54% less than the county average; trucks are 6.6% of it, below the county-wide 16.4%.
MT 323 is a quieter road: its busiest stretch carries 62% less than the county average; trucks are 16.8% of it, in line with the county-wide 16.4%.
Belle Creek Road is a local road at heart: the median trip using it lasts 17.5 minutes, against 51.4 for the county.
Trucks make up 40.6% of Hammond Road's traffic, against 16.4% across the county, so freight weighs heavily here.
The average monitored road in Carter carries 895 vehicles per day, 79% less than the Montana average of 4,202.
Carter carries less traffic than 87% of counties in Montana, averaging 895 vehicles per day.
Approximately 84% of highway traffic and 0% of non-highway traffic consists of vehicles whose trip originates outside Carter County, Montana. Most highway traffic here starts elsewhere, so the highways serve the wider region more than the local community.
Trucks make up about 16.4% of all traffic in Carter County, Montana, with about the same share on highways (15.9%).
Weekday traffic has two busy windows: AM peak 10:00 AM–12:00 PM and PM peak 12:00 PM–3:00 PM - about 64% above the daily average.
Drivers on Carter roads have a median age of 54 years, older than the Montana average of 47, and the median household income of the neighborhoods trips originate from averages $70,241, in line with the Montana average.
The average trip in Carter takes 51.4 minutes, 42% longer than the Montana average of 36.2 minutes, delays at signals and congestion included.
US 212 carries the most, 2,369 vehicles per day on its busiest stretch, followed by MT 7 (481), Box Elder Road (475), S-326 (414), MT 323 (339). Figures are AADT, both directions combined.
US 212, with about 377 trucks per day on its busiest stretch, 15.9% of its 2,369 vehicles.
About 2,369 vehicles per day in both directions on its busiest stretch, including 377 trucks (15.9%). Traffic is lower on its quieter stretches; TrafficZoom shows the count for every segment.

Mobile device location data (anonymized and aggregated)

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Historical traffic pattern databases
The same traffic breakdown for the areas closest to Carter County, Montana.
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