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TrafficThe average number of vehicles that travel each day over any road in the road network. | vehicles per day5,648 |
|---|---|
TrucksThe percentage of the total traffic volume composed of heavy vehicles. | 16.6% |
Average travel timeThe average time of travel averaged among all vehicles traveling on the road network. | 35.9 min |
Congestion ratioThe rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 15.7% |
Drivers’ average ageAverage age of residents in the geographic areas where the vehicle trips originated. | 40.3 yrs |
Drivers’ average incomeAverage income of residents in the geographic areas where the vehicle trips originated. | $75,814 |
The average monitored road in Merced County, California carries 5,648 vehicles per day. Across its 1,039 miles of monitored roads, that adds up to 7,127,206 vehicle-miles traveled per day (≈2.6 billion per year). About 1 in 6 vehicles is a truck, well above the 7.8% across California - a freight-heavy mix.
Merced sees 56% lower average daily traffic volume than the state average (5,648 vehicles per day against 12,766), suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Network-wide, Merced accounts for about 0.8% of California's statewide total of vehicle-miles. 61% of counties in California see more traffic than Merced's 5,648 vehicles per day.
The average trip takes 35.9 minutes, on par with the state level. 74% of counties in California have a shorter average travel time than Merced's 35.9 minutes.
The congestion ratio of 15.7% is 43% lower, pointing to smoother traffic flow than the state level - fewer delays make delivery windows more reliable.
| Traffic | vehicles per day16,085 |
|---|---|
| Trucks | 22.2% |
| Average travel time | 56.8 min |
| Congestion ratio | 33.4% |
| Drivers’ average age | 40.9 yrs |
| Drivers’ average income | $77,071 |
A little more than half of the driving in Merced County, California happens on highways: 63% of all vehicle-miles. The average highway carries 16,085 vehicles per day, 237% more than the average non-highway road in the same area, which carries 4,767 vehicles per day.
With 25% of the road miles (256 miles in 972 segments), highways punch above their length, carrying 4,522,600 vehicle-miles traveled per day (≈1.7 billion per year).
By highway travel volume, Merced outranks 55% of counties in California.
At 22.2%, highway truck share is 114% higher than the state average. That marks Merced as a major freight corridor, where highway access is what logistics operators compete on.
Merced's highway truck share (22.2%) is higher than 92% of counties in California. Merced's highway truck count is higher than 71% of counties in California, at roughly 3,579 trucks per day.
| Traffic | vehicles per day4,767 |
|---|---|
| Trucks | 6.7% |
| Average travel time | 34.1 min |
| Congestion ratio | 14.2% |
| Drivers’ average age | 39.8 yrs |
| Drivers’ average income | $74,891 |
Local roads carry a significant share of travel in Merced County, California: 37% of all vehicle-miles. A typical local road sees 4,767 vehicles per day.
Local roads make up 75% of the monitored road miles (783 miles in 11,519 segments) but carry less than their share of travel: 2,604,606 vehicle-miles traveled per day (≈951 million per year). Trucks make up 6.7% of non-highway traffic, about 1 in 15 vehicles.
Compared to highways, non-highway routes see 70% fewer trucks by share.
Non-highway congestion (14.2%) runs 46% lower than the state average, pointing to smoother local traffic flow.
77% of counties in California see higher average driver income among trip origins than Merced. Merced's median driver age is lower than 96% of counties in California.
Merced County's biggest difference from the California average is its highway truck share, 114% above it. Its truck share is also 113% above.
| Metric | Merced County | California average | Difference |
|---|---|---|---|
| Traffic | 5,648 | 12,766 | -55.8% |
| Truck % (Total Traffic) | 16.6% | 7.8% | +113.0% |
| Truck % (Highway) | 22.2% | 10.4% | +114.4% |
| Avg. Travel Time | 35.9 min | 34.5 min | +4.0% |
Set against the average of the 4 areas nearest to it, Merced County runs 6.1 percentage points more truck traffic; it has the third 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.
| Area | Average daily traffic | Truck share | Daily vehicle-miles | Average travel time | Congestion ratio |
|---|---|---|---|---|---|
| Merced County | 5,648 | 16.6% | 7,127,206 | 35.9 min | 15.7% |
| Stanislaus County, California | 10,302 | 9.8% | 11,775,215 | 33.1 min | 27.2% |
| Mariposa County, California | 2,498 | 8.9% | 395,324 | 33.7 min | 3.5% |
| San Benito County, California | 7,894 | 10.4% | 1,898,680 | 33.7 min | 21.0% |
| Madera County, California | 5,376 | 12.7% | 5,392,653 | 37.0 min | 19.4% |
| California average | 12,766 | 7.8% | N/A | 34.5 min | 27.4% |
Merced County sits in the bottom quarter of the California field on average driver age, at #56 of 58.
| Measure | Merced County | California rank |
|---|---|---|
| Traffic volume (AADT) | 5,648 | #36 of 58 |
| Highway vehicle-miles per day | 4,522,600 | #24 of 52 |
| Truck share on highways | 22.2% | #5 of 52 |
| Highway trucks per day | 3,579 | #16 of 52 |
| Average travel time | 35.9 min | #16 of 58 |
| Average driver income | $75,814 | #45 of 58 |
| Average driver age | 40.3 yrs | #56 of 58 |
The two ends of this table sit far apart: #5 of 52 on truck share on highways, against #56 of 58 on average driver age.
On their busiest stretches, the three busiest roads in Merced County carry 57,317 vehicles a day on average, 10.1 times the typical road in the county (5,648).
CA 99 is the busiest road, at 65,148 vehicles a day, 13,337 of them trucks (20.5%). It tops the truck ranking too, with the most trucks.
Trips using Side Freeway are long: a median of 82.7 minutes against 35.9 county-wide, the mark of a through route.
Freight stands out on Side Freeway: trucks are 31.4% of the traffic there, against 16.6% county-wide.
Travel on CA 99's busiest stretch runs 68% over free-flow time, against 16% across the county, so expect slower peak hours.
CA 99 / CA 59 / CA 140 is one of the more congested roads here: trips take 63% longer than at free-flow speed, against 16% county-wide.
Drivers on Golden State Highway are on long journeys, a median 64.0 minutes against 35.9 county-wide: a through route more than a local street.
At 8.7 times the county average, CA 99 / CA 140 draws drivers from neighborhoods averaging $70,701 in household income.
Pacheco Pass Highway carries through traffic: the median trip using it lasts 78.1 minutes, against 35.9 for the county.
Side Freeway carries 4.5 times the county average at its busiest, 7,885 of them trucks (31.4%, above the county-wide 16.6%).
The average monitored road in Merced carries 5,648 vehicles per day, 56% less than the California average of 12,766.
Trip origins in Merced have lower average income than 77% of counties in California.
Approximately 11% of highway traffic and 2% of non-highway traffic consists of vehicles whose trip originates outside Merced County, California. Even highway traffic is mostly local, so these roads mainly serve residents and commuters.
Drivers on Merced roads have a median age of 40 years, younger than the California average of 43, and the median household income of the neighborhoods trips originate from averages $75,814, 32% below the California average.
The average trip in Merced takes 35.9 minutes, about the same as the California average, delays at signals and congestion included.
Trucks make up about 16.6% of all traffic in Merced County, California, rising to 22.2% on highways, where long-haul freight concentrates.
CA 99 carries the most, 65,148 vehicles per day on its busiest stretch, followed by CA 99 / CA 59 / CA 140 (53,927), Golden State Highway (52,877), CA 99 / CA 140 (48,965), Pacheco Pass Highway (35,157). Figures are AADT, both directions combined.
CA 99, with about 13,337 trucks per day on its busiest stretch, 20.5% of its 65,148 vehicles.
About 65,148 vehicles per day in both directions on its busiest stretch, including 13,337 trucks (20.5%). 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 Merced County, California.
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