This page delivers traffic analytics for Placer County, California. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Placer County, California among 1,014 road miles divided in 21,625 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 248 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
The average number of vehicles that travel each day over any road in the road network.
8,967
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
7.9%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
30.8 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
24.3%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
46.2 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$125,704
Our data indicates an estimated average traffic volume of 8,967 vehicles per day in Placer County, California that results in 11,780,502 vehicle-miles traveled per day (≈4.3 billion per year). The traffic stream is comprised of an average of 1 truck for every 13 vehicles. Typical time spent behind the wheel per trip is 30.8 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the California state averages: Placer's average daily traffic volume is 30% lower than the state average - 8,967 vehicles per day against 12,766 - suggesting less traffic load per road, a critical factor for logistics and site planning. Across the whole network that adds up to 11,780,502 vehicle-miles traveled per day (≈4.3 billion per year), roughly 1.3% of California's statewide total. At 30.8 minutes, the average travel time is 11% lower than the state level. Congestion runs 11% lower than the state level, at a ratio of 24.3% - smoother traffic flow - crucial for traffic control improvement and logistics planning. By volume, Placer's 8,967 vehicles per day outpaces 68% of counties in California. Its average travel time of 30.8 minutes is longer than 7% of counties in California.
Highway vs. Non-Highway Traffic Analysis
Highway Traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
28,885
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
12.9%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
37.4 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
49.7%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
46.3 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$115,379
A significant volume of traffic in Placer County, California utilizes the highway network. The average highway carries 28,885 vehicles per day, 239% more than the average non-highway road in the same area, which carries 8,511 vehicles per day. That average covers 176 highway road miles divided in 484 segments (average segment length 1,922 ft), together carrying 4,797,758 vehicle-miles traveled per day (≈1.8 billion per year). 61% of counties in California move less traffic on their highways. Trucks constitute 12.9% of highway traffic.
Analytical insight
The concentration of trucks on highways (12.9%) is 25% higher than the state average for similar road classifications. This indicates Placer serves as a significant freight corridor. For logistics operators, this validates the importance of highway access. 55% of counties in California see a lower highway truck share than Placer's 12.9%. 65% of counties in California see fewer highway trucks per day than Placer's roughly 3,735.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
8,511
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
4.4%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
30.6 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
23.7%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
46.1 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$130,713
The non-highway road network in Placer County, California supports a substantial volume of traffic. The average non-highway road carries 8,511 vehicles per day, 71% less than the average highway in the same area, which carries 28,885 vehicles per day. That average covers 838 non-highway road miles divided in 21,141 segments (average segment length 209 ft), together carrying 6,982,744 vehicle-miles traveled per day (≈2.5 billion per year). Trucks constitute 4.4% of non-highway traffic.
Analytical insight
The concentration of trucks on non-highway roads is 66% lower than on highways. At 11% lower than the state level, the non-highway congestion ratio of 23.7% signals easier movement on local roads. Overall, average travel time here is longer than 7% of counties in California. 88% of counties in California see lower average driver income among trip origins than Placer. The driver population here skews older than 58% of counties in California.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–12:00 PM and PM peak 3:00 PM–8:00 PM, with volumes reaching approximately 87% higher than the daily average.
Weekend traffic:
Weekend volumes run about 9% below weekday levels.
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +20% versus the annual average.
Lowest month:
March is the quietest month, with volumes -25% versus the annual average.
Analytical insight
In Placer County, California, the peak hour concentrates about 8% of the day's traffic, and seasonal swing is pronounced at +20% in high season.
Traffic Flow Profile Comparison
Metric
Placer
California
Average
Difference
Traffic
8,967
12,766
-29.8%
Truck % (Total Traffic)
7.9%
7.8%
+1.4%
Truck % (Highway)
12.9%
10.4%
+24.6%
Avg. Travel Time
30.8 min
34.5 min
-10.8%
Frequently Asked Questions
The average daily traffic volume is calculated at 8,967 vehicles per day, providing a baseline for daily operations and site assessment.
Placer carries more traffic than 68% of counties in California, averaging 8,967 vehicles per day.
Traffic volumes are typically 20% higher during June–August. Volumes drop to their lowest levels in March, averaging 6,756 vehicles per day - a 25% decrease from the annual average.
Weekday peaks occur between 7:00 AM and 12:00 PM in the morning and between 3:00 PM and 8:00 PM in the evening - about 87% above the daily average.
The average travel time for drivers is 30.8 minutes, offering a standard metric for commute and delivery route planning.
Drivers on Placer roads have a median age of 46 years, and the median household income of the neighborhoods trips originate from averages $125,704 - useful context for retail siting and customer profiling.
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)
