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Traffic heat map of San Bernardino County, California: 5,033 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Ontario Freeway

San Bernardino County, California Traffic Counts

How busy are the roads of San Bernardino County, California? We measure 5,033 road miles, divided into 94,522 segments, with multi-sourced, cross-verified mobile and sensor data. It is one of the top 3 counties in California for highway travel volume. 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 San Bernardino County, California

Traffic

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

vehicles per day12,150
Trucks

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

11.5%
Average travel time

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

35.4 min
Congestion ratio

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

23.9%
Drivers’ average age

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

42.0 yrs
Drivers’ average income

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

$95,356

The average monitored road in San Bernardino County, California carries 12,150 vehicles per day. Across its 5,033 miles of monitored roads, that adds up to 71,112,571 vehicle-miles traveled per day (≈26.0 billion per year). Trucks are 11.5% of traffic, more than the 7.8% across California.

Busier roads than 88% of counties in California

The average road in San Bernardino carries 12,150 vehicles per day, essentially matching the state average of 12,766. Network-wide, San Bernardino accounts for about 7.7% of California's statewide total of vehicle-miles. San Bernardino carries more traffic than 88% of counties in California.

Journey times here (35.4 minutes on average) closely track the state level. On travel time, San Bernardino runs longer than 70% of counties in California.

Congestion is somewhat lower than the state level, at a ratio of 23.9% (13% lower) - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in San Bernardino County, California

Trafficvehicles per day41,523
Trucks15.9%
Average travel time49.1 min
Congestion ratio56.7%
Drivers’ average age42.1 yrs
Drivers’ average income$97,899

A little more than half of the driving in San Bernardino County, California happens on highways: 59% of all vehicle-miles. The average highway carries 41,523 vehicles per day, 276% more than the average non-highway road in the same area, which carries 11,038 vehicles per day.

With 26% of the road miles (1,304 miles in 3,449 segments), highways punch above their length, carrying 42,037,322 vehicle-miles traveled per day (≈15.3 billion per year).

That puts San Bernardino among the top 3 counties in California for highway travel volume.

More highway trucks than 88% of counties in California

Highway truck concentration here runs 53% higher than the state average, at 15.9%. Highways here lean toward freight, so highway access is a real asset for logistics operators.

71% of counties in California see a lower highway truck share than San Bernardino's 15.9%. 88% of counties in California see fewer highway trucks per day than San Bernardino's roughly 6,615.

non-highway traffic icon

Non-highway Traffic in San Bernardino County, California

Trafficvehicles per day11,038
Trucks5.0%
Average travel time34.8 min
Congestion ratio22.7%
Drivers’ average age42.0 yrs
Drivers’ average income$93,425

Local roads carry a significant share of travel in San Bernardino County, California: 41% of all vehicle-miles. A typical local road sees 11,038 vehicles per day.

Local roads make up 74% of the monitored road miles (3,729 miles in 91,073 segments) but carry less than their share of travel: 29,075,249 vehicle-miles traveled per day (≈10.6 billion per year). Trucks make up 5.0% of non-highway traffic, about 1 in 20 vehicles.

Younger drivers than 84% of counties in California

Non-highway roads carry a truck concentration that's 68% lower than the highway network.

Non-highway congestion (22.7%) runs slightly lower than the state level (15% lower).

56% of counties in California see lower average driver income among trip origins than San Bernardino. 84% of counties in California have an older driver population than San Bernardino.

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 9:00 PM, with volumes reaching approximately 65% 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:
Traffic is nearly flat through the year: even April–June, the busiest stretch, runs only +4% versus the annual average.
Lowest month:
December is the quietest month, with volumes -6% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In San Bernardino County, California, the peak hour concentrates about 7% of the day's traffic, and traffic stays steady through the year (+4% in high season).

San Bernardino County vs. California Traffic Comparison

San Bernardino County's biggest difference from the California average is its highway truck share, 53% above it. Its truck share is also 48% above.

MetricSan Bernardino CountyCalifornia averageDifference
Traffic12,15012,766-4.8%
Truck % (Total Traffic)11.5%7.8%+47.7%
Truck % (Highway)15.9%10.4%+53.5%
Avg. Travel Time35.4 min34.5 min+2.5%

How San Bernardino County compares

San Bernardino County has a higher truck share than any nearby county

San Bernardino 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. Traffic volume here matches the areas around it, but more of that traffic is trucks - a difference in what routes through, not in how much.

San Bernardino 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
San Bernardino County12,15011.5%71,112,57135.4 min23.9%
Riverside County, California12,8818.5%71,474,67334.5 min29.2%
Clark County, Nevada9,5207.9%40,467,07734.5 min20.8%
Los Angeles County, California19,0006.0%204,530,09437.1 min33.4%
Orange County, California15,4354.9%68,602,70333.5 min28.1%
California average12,7667.8%N/A34.5 min27.4%

San Bernardino County ranked within California

On highway travel volume, San Bernardino County is among the three highest county-level areas in California.

San Bernardino County ranked among 58 county-level areas in California (1 = highest); measures without data in every county rank a smaller field, down to 52.
MeasureSan Bernardino CountyCalifornia rank
Traffic volume (AADT)12,150#8 of 58
Highway vehicle-miles per day42,037,322#3 of 52
Truck share on highways15.9%#16 of 52
Highway trucks per day6,615#7 of 52
Average travel time35.4 min#18 of 58
Average driver income$95,356#26 of 58
Average driver age42.0 yrs#49 of 58

San Bernardino County ranks #3 of 52 on highway travel volume but #49 of 58 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in San Bernardino County, California

On their busiest stretches, the three busiest roads in San Bernardino County carry 218,668 vehicles a day on average, 18.0 times the typical road in the county (12,150).

Ontario Freeway leads with 222,796 vehicles a day, 17,503 of them trucks (7.9%). San Bernardino Freeway is practically level with it at 217,324. San Bernardino Freeway carries the most trucks, 18,505 a day (8.5% of its traffic), although it ranks #2 for all traffic.

Trips using Mojave Freeway are long: a median of 56.8 minutes against 35.4 county-wide, the mark of a through route.

Freight stands out on Mojave Freeway: trucks are 21.1% of the traffic there, against 11.5% county-wide.

Drivers on CHP Officer John Bailey Memorial Freeway come from neighborhoods with an average household income of $119,603, 25% above the county average of $95,356.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Ontario FreewayMotorway · 222,796vehicles17,503trucks · 7.9%
Road class
Motorway
Congestion ratio
118.0%
Median trip time
41.2 min
Drivers’ median age
42.2 yrs
Drivers’ average income
$116,109

Travel on Ontario Freeway's busiest stretch runs 118% over free-flow time, against 24% across the county, so expect slower peak hours.

2San Bernardino FreewayMotorway · 217,324vehicles18,505trucks · 8.5%
Road class
Motorway
Congestion ratio
108.0%
Median trip time
43.4 min
Drivers’ median age
41.5 yrs
Drivers’ average income
$92,866

San Bernardino Freeway is one of the more congested roads here: trips take 108% longer than at free-flow speed, against 24% county-wide.

3Pomona FreewayMotorway · 215,885vehicles17,658trucks · 8.2%
Road class
Motorway
Congestion ratio
102.6%
Median trip time
47.4 min
Drivers’ median age
42.3 yrs
Drivers’ average income
$107,076

Pomona Freeway carries through traffic: the median trip using it lasts 47.4 minutes, against 35.4 for the county.

4CHP Officer John Bailey Memorial FreewayMotorway · 170,504vehicles16,955trucks · 9.9%
Road class
Motorway
Congestion ratio
85.1%
Median trip time
44.9 min
Drivers’ median age
42.3 yrs
Drivers’ average income
$119,603

CHP Officer John Bailey Memorial Freeway carries 14.0 times the county average at its busiest, 16,955 of them trucks (9.9%, below the county-wide 11.5%).

5Riverside FreewayMotorway · 168,310vehicles13,756trucks · 8.2%
Road class
Motorway
Congestion ratio
88.2%
Median trip time
42.1 min
Drivers’ median age
40.8 yrs
Drivers’ average income
$92,077

Riverside Freeway carries 13.9 times the county average on its busiest stretch, where the median trip lasts 42.1 minutes.

Ranked by trucks per day

Cars and light vehiclesTrucks
1San Bernardino FreewayMotorway · #2 by traffic217,324vehicles18,505trucks · 8.5%
2Pomona FreewayMotorway · #3 by traffic215,885vehicles17,658trucks · 8.2%
3Ontario FreewayMotorway · #1 by traffic222,796vehicles17,503trucks · 7.9%
4CHP Officer John Bailey Memorial FreewayMotorway · #4 by traffic170,504vehicles16,955trucks · 9.9%
5Mojave FreewayMotorway · 67,287vehicles14,165trucks · 21.1%
Road class
Motorway
Congestion ratio
55.8%
Median trip time
56.8 min
Drivers’ median age
42.1 yrs
Drivers’ average income
$86,322

At 5.5 times the county average, Mojave Freeway draws drivers from neighborhoods averaging $86,322 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

San BernardinoDepartment 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 San Bernardino County

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

Need segment-level traffic data?

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