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Traffic heat map of Arizona: roads over 1,000 vehicles a day shaded from blue (light) to red (heavy traffic), busiest on Deck Park Tunnel and Papago Freeway

Arizona Traffic Counts

TrafficZoom tracks traffic on 20,521 road miles in Arizona, divided into 344,582 segments averaging 314 ft. It ranks among the top 5 states nationwide for average daily traffic. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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total traffic icon

Total Traffic Volume & Performance in Arizona

Traffic

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

vehicles per day10,009
Trucks

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

9.6%
Average travel time

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

32.9 min
Congestion ratio

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

18.1%
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.

$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%).

Busier roads than 94% of states nationwide

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.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Arizona

Trafficvehicles per day17,172
Trucks13.9%
Average travel time39.2 min
Congestion ratio33.9%
Drivers’ average age45.8 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.

More highway trucks than 70% 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.

non-highway traffic icon

Non-highway Traffic in Arizona

Trafficvehicles per day9,535
Trucks5.3%
Average travel time32.6 min
Congestion ratio18.1%
Drivers’ average age43.1 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%).

Younger drivers than 86% of states nationwide

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.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and a long afternoon plateau from 3:00 PM to 8:00 PM, with volumes reaching approximately 72% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 18% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
March–May is the high season, with volumes +6% versus the annual average.
Lowest month:
July is the quietest month, with volumes -7% versus the annual average - an unusual summer low, when most places are at their busiest.

Data Finding: Hourly & Seasonal Patterns

In Arizona, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +6% in high season.

Arizona vs. United States Traffic Comparison

Of the four measures, average daily traffic per road differs most: Arizona runs 43% above the United States average.

MetricArizonaUnited States averageDifference
Traffic10,0096,986+43.3%
Truck % (Total Traffic)9.6%9.3%+2.9%
Truck % (Highway)13.9%13.1%+6.7%
Avg. Travel Time32.9 min33.3 min-1.1%

How Arizona compares

Arizona against nearby states

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.

Arizona and the 4 nearest states by centroid distance, with the United States average for scale.
StateAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Arizona10,0099.6%174,389,60332.9 min18.1%
Nevada7,9149.7%63,246,04333.8 min17.1%
New Mexico4,56216.2%64,135,02234.0 min14.4%
California12,7667.8%927,539,30134.5 min27.4%
Utah10,1988.9%87,040,46632.2 min21.2%
United States average6,9869.3%N/A33.3 min18.9%

Busiest counties in Arizona

Arizona's three busiest counties account for 74.4% of all the vehicle-miles measured in the state.

Ranked by daily vehicle-miles, across the 15 counties in Arizona with a published traffic page. Vehicle-miles is total travel, so this ranks by traffic MOVED rather than by how busy a typical road is.
CountyDaily vehicle-milesAverage daily trafficTruck shareRoad miles
1. Maricopa County98,058,20511,8706.8%7,385
2. Pima County20,510,2089,1677.2%2,490
3. Pinal County11,206,6056,81812.6%1,420

Most truck-intensive counties in Arizona

Arizona's five most truck-intensive counties account for 27.8% of the truck vehicle-miles driven in the state.

Ranked by truck share of all traffic, across the same 15 counties, shown with the traffic volume that share is measured against.
CountyTruck shareTruck share on highwaysAverage daily trafficDaily vehicle-miles
1. La Paz County23.5%26.1%3,8962,850,962
2. Apache County21.3%29.1%2,7682,813,059
3. Cochise County19.2%25.3%4,1834,330,411
4. Mohave County17.9%21.9%6,6027,305,268
5. Coconino County17.5%21.0%6,3637,197,660

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.

Busiest roads 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.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Deck Park TunnelMaricopa County · Motorway · 300,306vehicles15,868trucks · 5.3%
Road class
Motorway
Congestion ratio
117.7%
Median trip time
38.1 min
Drivers’ median age
40.1 yrs
Drivers’ average income
$79,967

Travel on Deck Park Tunnel's busiest stretch runs 118% over free-flow time, against 18% across the state, so expect slower peak hours.

2Papago FreewayMaricopa County · Motorway · 224,873vehicles17,421trucks · 7.8%
Road class
Motorway
Congestion ratio
89.0%
Median trip time
36.3 min
Drivers’ median age
40.6 yrs
Drivers’ average income
$87,952

Papago Freeway is one of the more congested roads here: trips take 89% longer than at free-flow speed, against 18% state-wide.

3Maricopa FreewayMaricopa County · Motorway · 170,370vehicles15,044trucks · 8.8%
Road class
Motorway
Congestion ratio
80.5%
Median trip time
39.3 min
Drivers’ median age
40.7 yrs
Drivers’ average income
$90,768

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%.

4Pima FreewayMaricopa County · Motorway · 163,753vehicles10,625trucks · 6.5%
Road class
Motorway
Congestion ratio
72.8%
Median trip time
34.7 min
Drivers’ median age
45.2 yrs
Drivers’ average income
$111,340

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%).

5Price FreewayMaricopa County · Motorway · 159,813vehicles9,723trucks · 6.1%
Road class
Motorway
Congestion ratio
73.9%
Median trip time
34.5 min
Drivers’ median age
41.5 yrs
Drivers’ average income
$110,771

Price Freeway carries 16.0 times the state average on its busiest stretch, where the median trip lasts 34.5 minutes.

6North FreewayPima County · Motorway · 144,086vehicles12,587trucks · 8.7%
Road class
Motorway
Congestion ratio
75.1%
Median trip time
37.5 min
Drivers’ median age
43.9 yrs
Drivers’ average income
$72,131

At 14.4 times the state average, North Freeway draws drivers from neighborhoods averaging $72,131 in household income.

7Superstition FreewayMaricopa County · Motorway · 143,477vehicles8,826trucks · 6.2%
Road class
Motorway
Congestion ratio
61.2%
Median trip time
35.7 min
Drivers’ median age
42.4 yrs
Drivers’ average income
$93,889

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%.

8Piestewa FreewayMaricopa County · Motorway · 127,263vehicles8,749trucks · 6.9%
Road class
Motorway
Congestion ratio
77.8%
Median trip time
33.2 min
Drivers’ median age
43.1 yrs
Drivers’ average income
$103,875

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%.

9South FreewayPima County · Motorway · 125,407vehicles9,403trucks · 7.5%
Road class
Motorway
Congestion ratio
74.6%
Median trip time
37.0 min
Drivers’ median age
43.4 yrs
Drivers’ average income
$69,624

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%).

10Agua Fria FreewayMaricopa County · Motorway · 120,524vehicles9,133trucks · 7.6%
Road class
Motorway
Congestion ratio
71.3%
Median trip time
33.0 min
Drivers’ median age
42.8 yrs
Drivers’ average income
$96,520

Agua Fria Freeway carries 12.0 times the state average on its busiest stretch, where the median trip lasts 33.0 minutes.

Ranked by trucks per day

Only named roads are listed. Some unnamed segments, such as ramps or unlabeled carriageways, may carry as much traffic as the roads shown.

Cars and light vehiclesTrucks
1Papago FreewayMaricopa County · Motorway · #2 by traffic224,873vehicles17,421trucks · 7.8%
2Deck Park TunnelMaricopa County · Motorway · #1 by traffic300,306vehicles15,868trucks · 5.3%
3Maricopa FreewayMaricopa County · Motorway · #3 by traffic170,370vehicles15,044trucks · 8.8%
4Casa Grande-Tucson HighwayPima County · Motorway · 111,793vehicles12,980trucks · 11.6%
Road class
Motorway
Congestion ratio
70.7%
Median trip time
39.0 min
Drivers’ median age
43.2 yrs
Drivers’ average income
$78,074

At 11.2 times the state average, Casa Grande-Tucson Highway draws drivers from neighborhoods averaging $78,074 in household income.

5North FreewayPima County · Motorway · #6 by traffic144,086vehicles12,587trucks · 8.7%
6Casa Grande-Tucson HighwayPinal County · Motorway · 51,668vehicles11,456trucks · 22.2%
Road class
Motorway
Congestion ratio
38.9%
Median trip time
65.2 min
Drivers’ median age
41.5 yrs
Drivers’ average income
$69,142

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%.

7Phoenix-Casa Grande HighwayMaricopa County · Motorway · 76,937vehicles11,430trucks · 14.9%
Road class
Motorway
Congestion ratio
72.6%
Median trip time
41.6 min
Drivers’ median age
42.6 yrs
Drivers’ average income
$89,202

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%.

8Phoenix-Casa Grande HighwayPinal County · Motorway · 54,581vehicles11,396trucks · 20.9%
Road class
Motorway
Congestion ratio
46.0%
Median trip time
60.0 min
Drivers’ median age
41.7 yrs
Drivers’ average income
$71,345

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.

9Pima FreewayMaricopa County · Motorway · #4 by traffic163,753vehicles10,625trucks · 6.5%
10Congressman Ed Pastor FreewayMaricopa County · Motorway · 72,326vehicles10,598trucks · 14.7%
Road class
Motorway
Congestion ratio
38.7%
Median trip time
39.4 min
Drivers’ median age
40.2 yrs
Drivers’ average income
$104,850

Trucks make up 14.7% of Congressman Ed Pastor Freeway's traffic, against 9.6% across the state, so freight weighs heavily here.

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

ArizonaDepartment 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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States near Arizona

The same traffic breakdown for the states closest to Arizona.

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Counties in Arizona

Traffic counts, truck share, congestion and driver demographics for each of the 15 counties TrafficZoom measures in Arizona.