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Traffic heat map of Warren County, New Jersey: 432 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Christopher Columbus Highway

Warren County, New Jersey Traffic Counts

How busy are the roads of Warren County, New Jersey? We measure 432 road miles, divided into 10,169 segments, with multi-sourced, cross-verified mobile and sensor data. Its highways rank among the top 5 counties in New Jersey for trucks per day. 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 Warren County, New Jersey

Traffic

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

vehicles per day4,385
Trucks

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

12.7%
Average travel time

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

34.2 min
Congestion ratio

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

15.1%
Drivers’ average age

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

49.9 yrs
Drivers’ average income

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

$107,963

A typical monitored road in Warren County, New Jersey sees 4,385 vehicles per day, while its 432 miles of monitored roads together handle 2,616,020 vehicle-miles traveled per day (≈955 million per year). About 1 in 8 vehicles is a truck, well above the 7.9% across New Jersey - a freight-heavy mix.

Quieter roads than 95% of counties in New Jersey

Warren sees 51% lower average daily traffic volume than the state average (4,385 vehicles per day against 8,886), suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Network-wide, Warren accounts for about 1.7% of New Jersey's statewide total of vehicle-miles. 95% of counties in New Jersey see more traffic than Warren's 4,385 vehicles per day.

The average trip takes 34.2 minutes, on par with the state level. On travel time, Warren runs longer than 60% of counties in New Jersey.

Congestion runs 44% lower than the state level, at a ratio of 15.1%, which means smoother traffic flow - fewer delays make delivery windows more reliable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Warren County, New Jersey

Trafficvehicles per day12,806
Trucks17.8%
Average travel time45.8 min
Congestion ratio27.6%
Drivers’ average age49.5 yrs
Drivers’ average income$106,185

Highways carry more than half of all travel in Warren County, New Jersey (58% of vehicle-miles). The average highway carries 12,806 vehicles per day, 252% more than the average non-highway road in the same area, which carries 3,639 vehicles per day.

Highways make up 21% of the monitored road miles (89 miles, 828 segments), so they carry more than their share: 1,521,874 vehicle-miles traveled per day (≈555 million per year).

Higher highway truck share than 95% of counties in New Jersey

The concentration of trucks on highways (17.8%) is 74% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.

Warren's highway truck share (17.8%) is higher than 95% of counties in New Jersey. 80% of counties in New Jersey see fewer highway trucks per day than Warren's roughly 2,279.

non-highway traffic icon

Non-highway Traffic in Warren County, New Jersey

Trafficvehicles per day3,639
Trucks5.7%
Average travel time33.2 min
Congestion ratio14.0%
Drivers’ average age50.3 yrs
Drivers’ average income$109,109

Local roads carry a significant share of travel in Warren County, New Jersey: 42% of all vehicle-miles. On the average non-highway road, that comes to 3,639 vehicles per day.

Local roads make up 79% of the monitored road miles (343 miles in 9,341 segments) but carry less than their share of travel: 1,094,147 vehicle-miles traveled per day (≈399 million per year). About 1 in 18 vehicles on non-highway roads is a truck (5.7%).

Older drivers than 80% of counties in New Jersey

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

Non-highway congestion (14.0%) runs 42% lower than the state average, pointing to smoother local traffic flow.

70% of counties in New Jersey see higher average driver income among trip origins than Warren. 80% of counties in New Jersey have a younger driver population than Warren.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and a long afternoon plateau from 12:00 PM to 6:00 PM, with volumes reaching approximately 72% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 12% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +9% versus the annual average.
Lowest month:
December is the quietest month, with volumes -10% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Warren County, New Jersey, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +9% in high season.

Warren County vs. New Jersey Traffic Comparison

Warren County's biggest difference from the New Jersey average is its highway truck share, 74% above it. Its truck share is also 61% above.

MetricWarren CountyNew Jersey averageDifference
Traffic4,3858,886-50.6%
Truck % (Total Traffic)12.7%7.9%+60.5%
Truck % (Highway)17.8%10.2%+74.3%
Avg. Travel Time34.2 min33.4 min+2.7%

How Warren County compares

Warren County has the quietest roads among its nearby counties

Compared with its 4 closest neighbours, Warren County carries 29.1% less traffic on a typical road; it has the quietest roads of the five. Smaller and quieter on both counts: a shorter network than the areas around it, carrying lighter traffic across it.

Warren County and the 4 nearest county-level areas by centroid distance, with the New Jersey average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Warren County4,38512.7%2,616,02034.2 min15.1%
Morris County, New Jersey8,6797.6%10,536,60432.1 min22.8%
Hunterdon County, New Jersey5,23011.0%3,591,63435.4 min14.0%
Sussex County, New Jersey5,4007.0%2,542,65433.3 min18.9%
Monroe County, Pennsylvania5,44210.4%3,655,76830.6 min17.3%
New Jersey average8,8867.9%N/A33.4 min27.0%

Warren County ranked within New Jersey

Warren County sits in New Jersey's top three on truck share on highways.

Warren County ranked among 21 county-level areas in New Jersey (1 = highest).
MeasureWarren CountyNew Jersey rank
Traffic volume (AADT)4,385#20 of 21
Highway vehicle-miles per day1,521,874#16 of 21
Truck share on highways17.8%#2 of 21
Highway trucks per day2,279#5 of 21
Average travel time34.2 min#9 of 21
Average driver income$107,963#15 of 21
Average driver age49.9 yrs#5 of 21

Warren County ranks #2 of 21 on truck share on highways but #20 of 21 on average daily traffic volume. It is a freight corridor without the traffic to match: trucks dominate the mix precisely because there is so little local car traffic to dilute them.

Busiest roads in Warren County, New Jersey

The three busiest roads in Warren County average 35,299 vehicles a day, 8.0 times the county average of 4,385 across all its monitored roads.

Christopher Columbus Highway leads with 42,170 vehicles a day, 7,703 of them trucks (18.3%). Phillipsburg-Newark Expressway carries the most trucks, 9,615 a day (28.0% of its traffic), although it ranks #2 for all traffic.

Freight stands out on Phillipsburg-Newark Expressway: trucks are 28.0% of the traffic there, against 12.7% county-wide.

Phillipsburg-Newark Expressway carries longer journeys than most roads here, with a median trip of 55.2 minutes against 34.2 county-wide.

Few trucks use Memorial Parkway: 5.7% of its traffic, under half the county's 12.7%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Christopher Columbus HighwayMotorway · 42,170vehicles7,703trucks · 18.3%
Road class
Motorway
Congestion ratio
28.6%
Median trip time
54.8 min
Drivers’ median age
49.6 yrs
Drivers’ average income
$103,588

Christopher Columbus Highway carries through traffic: the median trip using it lasts 54.8 minutes, against 34.2 for the county.

2Phillipsburg-Newark ExpresswayMotorway · 34,354vehicles9,615trucks · 28.0%
Road class
Motorway
Congestion ratio
26.1%
Median trip time
55.2 min
Drivers’ median age
49.8 yrs
Drivers’ average income
$117,074

A main artery: Phillipsburg-Newark Expressway's busiest stretch carries 7.8 times the county average; trucks are 28.0% of it, above the county-wide 12.7%.

3Memorial ParkwayTrunk road · 29,375vehicles1,676trucks · 5.7%
Road class
Trunk road
Congestion ratio
25.4%
Median trip time
33.7 min
Drivers’ median age
48.3 yrs
Drivers’ average income
$94,724

Memorial Parkway is a trunk route for the county, carrying 6.7 times the county average on its busiest stretch; trucks are 5.7% of it, below the county-wide 12.7%.

4Route 22Trunk road · 26,661vehicles1,844trucks · 6.9%
Road class
Trunk road
Congestion ratio
28.2%
Median trip time
34.4 min
Drivers’ median age
48.5 yrs
Drivers’ average income
$107,525

Route 22 carries 6.1 times the county average at its busiest, 1,844 of them trucks (6.9%, below the county-wide 12.7%).

5NJ 57Primary road · 20,806vehicles996trucks · 4.8%
Road class
Primary road
Congestion ratio
57.8%
Median trip time
33.1 min
Drivers’ median age
48.9 yrs
Drivers’ average income
$112,130

Travel on NJ 57's busiest stretch runs 58% over free-flow time, against 15% across the county, so expect slower peak hours.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Phillipsburg-Newark ExpresswayMotorway · #2 by traffic34,354vehicles9,615trucks · 28.0%
2Christopher Columbus HighwayMotorway · #1 by traffic42,170vehicles7,703trucks · 18.3%
3Route 22Trunk road · #4 by traffic26,661vehicles1,844trucks · 6.9%
4Memorial ParkwayTrunk road · #3 by traffic29,375vehicles1,676trucks · 5.7%
5NJ 31Trunk road · 14,548vehicles1,095trucks · 7.5%
Road class
Trunk road
Congestion ratio
39.0%
Median trip time
37.7 min
Drivers’ median age
51.2 yrs
Drivers’ average income
$109,912

NJ 31 is one of the more congested roads here: trips take 39% longer than at free-flow speed, against 15% county-wide.

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

WarrenDepartment 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 Warren County

The same traffic breakdown for the areas closest to Warren County, New Jersey.

Need segment-level traffic data?

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