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Traffic heat map of Yolo County, California: 666 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Yolo Causeway and I 80

Yolo County, California Traffic Counts

TrafficZoom tracks traffic on 666 road miles in Yolo County, California, divided into 10,971 segments averaging 321 ft. Its busiest road, Yolo Causeway, carries 145,777 vehicles a day, 22.4 times the average road. 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 Volume & Performance in Yolo County, California

Traffic

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

vehicles per day6,499
Trucks

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

11.8%
Average travel time

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

33.4 min
Congestion ratio

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

17.9%
Drivers’ average age

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

40.2 yrs
Drivers’ average income

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

$101,754

A typical monitored road in Yolo County, California sees 6,499 vehicles per day, while its 666 miles of monitored roads together handle 5,669,594 vehicle-miles traveled per day (≈2.1 billion per year). About 1 in 8 vehicles is a truck, well above the 7.8% across California - a freight-heavy mix.

Traffic 49% below the California average

At 6,499 vehicles per day, the average monitored road in Yolo carries 49% less traffic than the state average of 12,766, 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 0.6% of California's statewide total. 53% of counties in California see less traffic than Yolo's 6,499 vehicles per day.

The average trip takes 33.4 minutes, on par with the state level. On travel time, Yolo runs shorter than 53% of counties in California.

Congestion runs 35% lower than the state level, at a ratio of 17.9%, which means smoother traffic flow - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Yolo County, California

Trafficvehicles per day23,764
Trucks15.4%
Average travel time47.0 min
Congestion ratio44.3%
Drivers’ average age40.8 yrs
Drivers’ average income$98,738

Highways carry more than half of all travel in Yolo County, California (62% of vehicle-miles). The average highway carries 23,764 vehicles per day, 299% more than the average non-highway road in the same area, which carries 5,959 vehicles per day.

Highways make up 24% of the monitored road miles (158 miles, 333 segments), so they carry more than their share: 3,494,946 vehicle-miles traveled per day (≈1.3 billion per year).

That is more highway travel volume than 51% of counties in California.

Freight-heavy highways

The concentration of trucks on highways (15.4%) is 49% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.

Yolo's highway truck share (15.4%) is higher than 67% of counties in California. By raw truck volume, Yolo carries more highway trucks than 59% of counties in California.

non-highway traffic icon

Non-highway Traffic in Yolo County, California

Trafficvehicles per day5,959
Trucks6.0%
Average travel time33.0 min
Congestion ratio17.0%
Drivers’ average age39.4 yrs
Drivers’ average income$104,325

A significant share of driving in Yolo County, California, 38% of vehicle-miles, happens on local roads. The average non-highway road carries 5,959 vehicles per day.

Local roads make up 76% of the monitored road miles (508 miles in 10,638 segments) but carry less than their share of travel: 2,174,648 vehicle-miles traveled per day (≈794 million per year). Trucks make up 6.0% of non-highway traffic, about 1 in 17 vehicles.

Younger drivers than 98% of counties in California

Non-highway roads carry a truck concentration that's 61% lower than the highway network.

At 36% lower than the state level, the non-highway congestion ratio of 17.0% signals easier movement on local roads.

Yolo's average driver income is higher than 60% of counties in California. Yolo's median driver age is lower than 98% of counties in California.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 8:00 AM–9:00 AM and a long afternoon plateau from 3:00 PM to 9:00 PM, with volumes reaching approximately 69% higher than the daily average.
Weekend traffic:
Weekend traffic is about as busy as on weekdays (-4%): leisure and through trips largely replace the commute.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
May–July is the high season, with volumes +19% versus the annual average.
Lowest month:
January is the quietest month, with volumes -28% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Yolo County, California, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +19% in high season.

Yolo County vs. California Traffic Comparison

Of the four measures, truck share differs most: Yolo County runs 53% above the California average. Its average daily traffic per road, by contrast, is 49% below.

MetricYolo CountyCalifornia averageDifference
Traffic6,49912,766-49.1%
Truck % (Total Traffic)11.8%7.8%+52.5%
Truck % (Highway)15.4%10.4%+48.8%
Avg. Travel Time33.4 min34.5 min-3.1%

How Yolo County compares

Yolo County has a higher truck share than any nearby county

Against the 4 nearest areas, Yolo County moves 41.8% of the total daily travel; it has the third busiest roads of the five. Smaller and quieter on both counts: a shorter network than the areas around it, carrying lighter traffic across it.

Yolo County and the 4 nearest county-level areas by centroid distance, with the California average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Yolo County6,49911.8%5,669,59433.4 min17.9%
Solano County, California10,2088.2%15,382,40732.4 min25.5%
Napa County, California6,4276.9%3,100,05333.9 min19.9%
Sutter County, California6,4538.8%2,634,83332.6 min15.3%
Sacramento County, California11,8025.8%33,124,74633.3 min27.9%
California average12,7667.8%N/A34.5 min27.4%

Yolo County ranked within California

Average driver age places Yolo County #57 of 58 in California - the bottom quarter of the state.

Yolo County ranked among 58 county-level areas in California (1 = highest); measures without data in every county rank a smaller field, down to 52.
MeasureYolo CountyCalifornia rank
Traffic volume (AADT)6,499#28 of 58
Highway vehicle-miles per day3,494,946#26 of 52
Truck share on highways15.4%#18 of 52
Highway trucks per day3,671#22 of 52
Average travel time33.4 min#31 of 58
Average driver income$101,754#24 of 58
Average driver age40.2 yrs#57 of 58

The two ends of this table sit far apart: #18 of 52 on truck share on highways, against #57 of 58 on average driver age.

Busiest roads in Yolo County, California

On their busiest stretches, the three busiest roads in Yolo County carry 117,904 vehicles a day on average, 18.1 times the typical road in the county (6,499).

Yolo Causeway is the busiest road, at 145,777 vehicles a day, 14,002 of them trucks (9.6%). I 80 carries the most trucks, 14,227 a day (11.8% of its traffic), although it ranks #2 for all traffic.

Trips using Side Highway are long: a median of 51.5 minutes against 33.4 county-wide, the mark of a through route.

Freight stands out on Side Highway: trucks are 22.1% of the traffic there, against 11.8% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Yolo CausewayMotorway · 145,777vehicles14,002trucks · 9.6%
Road class
Motorway
Congestion ratio
106.8%
Median trip time
48.9 min
Drivers’ median age
41.2 yrs
Drivers’ average income
$102,328

Delays build on Yolo Causeway: its congestion ratio of 107% over free-flow time is well above the county's 18%.

2I 80Motorway · 120,586vehicles14,227trucks · 11.8%
Road class
Motorway
Congestion ratio
88.1%
Median trip time
50.2 min
Drivers’ median age
40.5 yrs
Drivers’ average income
$101,526

Travel on I 80's busiest stretch runs 88% over free-flow time, against 18% across the county, so expect slower peak hours.

3Capital City FreewayMotorway · 87,349vehicles9,908trucks · 11.3%
Road class
Motorway
Congestion ratio
55.4%
Median trip time
42.5 min
Drivers’ median age
40.5 yrs
Drivers’ average income
$92,210

Capital City Freeway carries 13.4 times the county average on its busiest stretch, where the median trip lasts 42.5 minutes.

4Sacramento Beltline FreewayMotorway · 80,614vehicles11,991trucks · 14.9%
Road class
Motorway
Congestion ratio
65.9%
Median trip time
47.0 min
Drivers’ median age
41.2 yrs
Drivers’ average income
$98,244

At 12.4 times the county average, Sacramento Beltline Freeway draws drivers from neighborhoods averaging $98,244 in household income.

5Side FreewayMotorway · 54,743vehicles7,190trucks · 13.1%
Road class
Motorway
Congestion ratio
61.0%
Median trip time
42.5 min
Drivers’ median age
41.5 yrs
Drivers’ average income
$106,104

A main artery: Side Freeway's busiest stretch carries 8.4 times the county average; trucks are 13.1% of it, above the county-wide 11.8%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 80Motorway · #2 by traffic120,586vehicles14,227trucks · 11.8%
2Yolo CausewayMotorway · #1 by traffic145,777vehicles14,002trucks · 9.6%
3Sacramento Beltline FreewayMotorway · #4 by traffic80,614vehicles11,991trucks · 14.9%
4Capital City FreewayMotorway · #3 by traffic87,349vehicles9,908trucks · 11.3%
5Side HighwayMotorway · 34,196vehicles7,573trucks · 22.1%
Road class
Motorway
Congestion ratio
38.3%
Median trip time
51.5 min
Drivers’ median age
42.2 yrs
Drivers’ average income
$91,125

Side Highway is a trunk route for the county, carrying 5.3 times the county average on its busiest stretch; trucks are 22.1% of it, above the county-wide 11.8%.

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

YoloDepartment 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 Yolo County

The same traffic breakdown for the areas closest to Yolo County, California.

Need segment-level traffic data?

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