Need segment-level traffic data?
Identify traffic patterns street by street and analyze the exact corridors that matter to your project.

TrafficThe average number of vehicles that travel each day over any road in the road network. | vehicles per day10,009 |
|---|---|
TrucksThe percentage of the total traffic volume composed of heavy vehicles. | 9.6% |
Average travel timeThe average time of travel averaged among all vehicles traveling on the road network. | 32.9 min |
Congestion ratioThe rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 18.1% |
Drivers’ average ageAverage age of residents in the geographic areas where the vehicle trips originated. | 43.4 yrs |
Drivers’ average incomeAverage income of residents in the geographic areas where the vehicle trips originated. | $89,913 |
A typical monitored road in Arizona sees 10,009 vehicles per day, while its 20,521 miles of monitored roads together handle 174,389,603 vehicle-miles traveled per day (≈63.7 billion per year). About 1 in 10 vehicles is a truck, in line with the US (9.3%).
Arizona's average daily traffic volume is 43% higher than the national average - 10,009 vehicles per day against 6,986 - suggesting more traffic load per road - more exposure for roadside businesses, and more competition for road space. Network-wide, Arizona accounts for about 2.3% of the national total of vehicle-miles. 94% of states nationwide see less traffic than Arizona's 10,009 vehicles per day.
The average trip takes 32.9 minutes, on par with the national level. On travel time, Arizona runs shorter than 60% of states nationwide.
At 18.1%, the congestion ratio matches the national level closely.
| Traffic | vehicles per day17,172 |
|---|---|
| Trucks | 13.9% |
| Average travel time | 39.2 min |
| Congestion ratio | 33.9% |
| Drivers’ average age | 45.8 yrs |
| Drivers’ average income | $84,421 |
Travel in Arizona splits roughly evenly, with about half of it (50% of vehicle-miles) on highways. The average highway carries 17,172 vehicles per day, 80% more than the average non-highway road in the same area, which carries 9,535 vehicles per day.
With 28% of the road miles (5,805 miles in 21,391 segments), highways punch above their length, carrying 87,614,196 vehicle-miles traveled per day (≈32.0 billion per year).
That is more highway travel volume than 72% of states nationwide.
The concentration of trucks on highways (13.9%) is 7% higher than the national average for similar road classifications. The highway traffic mix is typical for the US: neither freight- nor commuter-dominated.
58% of states nationwide see a lower highway truck share than Arizona's 13.9%. 70% of states nationwide see fewer highway trucks per day than Arizona's roughly 2,396.
| Traffic | vehicles per day9,535 |
|---|---|
| Trucks | 5.3% |
| Average travel time | 32.6 min |
| Congestion ratio | 18.1% |
| Drivers’ average age | 43.1 yrs |
| Drivers’ average income | $94,307 |
Travel in Arizona splits roughly evenly, with about half of it (50% of vehicle-miles) on local roads. On the average non-highway road, that comes to 9,535 vehicles per day.
Spread over 14,716 miles and 323,191 segments, 72% of the road network, local roads carry a lighter load per mile: 86,775,405 vehicle-miles traveled per day (≈31.7 billion per year). About 1 in 19 vehicles on non-highway roads is a truck (5.3%).
The concentration of trucks on non-highway roads is 62% lower than on highways.
At 18.1%, the non-highway congestion ratio matches the national level closely.
Trip origins here have higher average income than 62% of states nationwide. 86% of states nationwide have an older driver population than Arizona.
Of the four measures, average daily traffic per road differs most: Arizona runs 43% above the United States average.
| Metric | Arizona | United States average | Difference |
|---|---|---|---|
| Traffic | 10,009 | 6,986 | +43.3% |
| Truck % (Total Traffic) | 9.6% | 9.3% | +2.9% |
| Truck % (Highway) | 13.9% | 13.1% | +6.7% |
| Avg. Travel Time | 32.9 min | 33.3 min | -1.1% |
Arizona 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 third busiest roads of the five. The same kind of road, just less of it: traffic per road matches the states around it while the network itself is smaller.
| State | Average daily traffic | Truck share | Daily vehicle-miles | Average travel time | Congestion ratio |
|---|---|---|---|---|---|
| Arizona | 10,009 | 9.6% | 174,389,603 | 32.9 min | 18.1% |
| Nevada | 7,914 | 9.7% | 63,246,043 | 33.8 min | 17.1% |
| New Mexico | 4,562 | 16.2% | 64,135,022 | 34.0 min | 14.4% |
| California | 12,766 | 7.8% | 927,539,301 | 34.5 min | 27.4% |
| Utah | 10,198 | 8.9% | 87,040,466 | 32.2 min | 21.2% |
| United States average | 6,986 | 9.3% | N/A | 33.3 min | 18.9% |
Arizona's three busiest counties account for 74.4% of all the vehicle-miles measured in the state.
| County | Daily vehicle-miles | Average daily traffic | Truck share | Road miles |
|---|---|---|---|---|
| 1. Maricopa County | 98,058,205 | 11,870 | 6.8% | 7,385 |
| 2. Pima County | 20,510,208 | 9,167 | 7.2% | 2,490 |
| 3. Pinal County | 11,206,605 | 6,818 | 12.6% | 1,420 |
Arizona's five most truck-intensive counties account for 27.8% of the truck vehicle-miles driven in the state.
| County | Truck share | Truck share on highways | Average daily traffic | Daily vehicle-miles |
|---|---|---|---|---|
| 1. La Paz County | 23.5% | 26.1% | 3,896 | 2,850,962 |
| 2. Apache County | 21.3% | 29.1% | 2,768 | 2,813,059 |
| 3. Cochise County | 19.2% | 25.3% | 4,183 | 4,330,411 |
| 4. Mohave County | 17.9% | 21.9% | 6,602 | 7,305,268 |
| 5. Coconino County | 17.5% | 21.0% | 6,363 | 7,197,660 |
Asking the same question of truck vehicle-miles gives a different answer - Maricopa County, Pima County, Pinal County, Mohave County and Coconino County, together 72.3% of all truck travel in Arizona.
The three busiest roads in Arizona average 231,850 vehicles a day, 23.2 times the state average of 10,009 across all its monitored roads.
Deck Park Tunnel in Maricopa County leads with 300,306 vehicles a day, 15,868 of them trucks (5.3%). Papago Freeway in Maricopa County carries the most trucks on the list, 17,421 a day (7.8% of its traffic), although it ranks #2 for all traffic.
Casa Grande-Tucson Highway in Pinal County carries longer journeys than most roads here, with a median trip of 65.2 minutes against 32.9 state-wide.
Freight stands out on Casa Grande-Tucson Highway in Pinal County and Phoenix-Casa Grande Highway in Pinal County: trucks are 22.2% and 20.9% of the traffic there, against 9.6% state-wide.
The truck ranking looks different from the traffic one, sharing just 5 of its 10 roads.
Travel on Deck Park Tunnel's busiest stretch runs 118% over free-flow time, against 18% across the state, so expect slower peak hours.
Papago Freeway is one of the more congested roads here: trips take 89% longer than at free-flow speed, against 18% state-wide.
Maricopa Freeway is a trunk route for the state, carrying 17.0 times the state average on its busiest stretch; trucks are 8.8% of it, below the state-wide 9.6%.
Pima Freeway carries 16.4 times the state average at its busiest, 10,625 of them trucks (6.5%, below the state-wide 9.6%).
Price Freeway carries 16.0 times the state average on its busiest stretch, where the median trip lasts 34.5 minutes.
At 14.4 times the state average, North Freeway draws drivers from neighborhoods averaging $72,131 in household income.
A main artery: Superstition Freeway's busiest stretch carries 14.3 times the state average; trucks are 6.2% of it, below the state-wide 9.6%.
Piestewa Freeway is a trunk route for the state, carrying 12.7 times the state average on its busiest stretch; trucks are 6.9% of it, below the state-wide 9.6%.
South Freeway carries 12.5 times the state average at its busiest, 9,403 of them trucks (7.5%, below the state-wide 9.6%).
Agua Fria Freeway carries 12.0 times the state average on its busiest stretch, where the median trip lasts 33.0 minutes.
Only named roads are listed. Some unnamed segments, such as ramps or unlabeled carriageways, may carry as much traffic as the roads shown.
At 11.2 times the state average, Casa Grande-Tucson Highway draws drivers from neighborhoods averaging $78,074 in household income.
A main artery: Casa Grande-Tucson Highway's busiest stretch carries 5.2 times the state average; trucks are 22.2% of it, above the state-wide 9.6%.
A freight route: trucks are 14.9% of the traffic on Phoenix-Casa Grande Highway's busiest stretch, 1.5 times the state-wide 9.6%.
Drivers on Phoenix-Casa Grande Highway are on long journeys, a median 60.0 minutes against 32.9 state-wide: a through route more than a local street.
Trucks make up 14.7% of Congressman Ed Pastor Freeway's traffic, against 9.6% across the state, so freight weighs heavily here.
The average monitored road in Arizona carries 10,009 vehicles per day, 43% more than the national average of 6,986.
The driver population in Arizona skews younger than 86% of states nationwide.
Traffic in Arizona peaks in March–May, when volumes run 6% above the annual average. July is the quietest month, averaging 9,267 vehicles per day, 7% below the annual average.
Weekday traffic has two busy windows: AM peak 7:00 AM–9:00 AM and a long afternoon plateau from 3:00 PM to 8:00 PM - about 72% above the daily average.
Drivers on Arizona roads have a median age of 43 years, and the median household income of the neighborhoods trips originate from averages $89,913, in line with the national average.
Deck Park Tunnel in Maricopa County carries the most, 300,306 vehicles per day on its busiest stretch, followed by Papago Freeway in Maricopa County (224,873), Maricopa Freeway in Maricopa County (170,370), Pima Freeway in Maricopa County (163,753), Price Freeway in Maricopa County (159,813). Figures are AADT, both directions combined.
About 300,306 vehicles per day in both directions on its busiest stretch, including 15,868 trucks (5.3%). Traffic is lower on its quieter stretches; TrafficZoom shows the count for every segment.
About 17,421 trucks per day on its busiest stretch, 7.8% of its 224,873 vehicles.

Mobile device location data (anonymized and aggregated)

Road sensor networks and traffic counters

Historical traffic pattern databases
The same traffic breakdown for the states closest to Arizona.
Identify traffic patterns street by street and analyze the exact corridors that matter to your project.
Traffic counts, truck share, congestion and driver demographics for each of the 15 counties TrafficZoom measures in Arizona.