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Traffic heat map of Middlesex County, New Jersey: 950 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Garden State Parkway and US 1

Middlesex County, New Jersey Traffic Counts

Our Middlesex County, New Jersey traffic data covers 27,881 road segments over 950 road miles, with an average segment of just 180 ft. It moves more highway traffic than any other county in New Jersey. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
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 Middlesex County, New Jersey

Traffic

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

vehicles per day11,977
Trucks

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

8.9%
Average travel time

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

33.0 min
Congestion ratio

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

33.5%
Drivers’ average age

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

46.4 yrs
Drivers’ average income

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

$134,773

A typical monitored road in Middlesex County, New Jersey sees 11,977 vehicles per day, while its 950 miles of monitored roads together handle 16,312,253 vehicle-miles traveled per day (≈6.0 billion per year). Trucks are 8.9% of traffic, close to the 7.9% across New Jersey.

Busier roads than 85% of counties in New Jersey

Middlesex's average daily traffic volume is 35% higher than the state average - 11,977 vehicles per day against 8,886 - suggesting more traffic load per road - a busier backdrop for retail sites, at the cost of slower access. Across the whole network, that travel is about 11% of New Jersey's statewide total. By volume, Middlesex's 11,977 vehicles per day outpaces 85% of counties in New Jersey.

At 33.0 minutes, the average travel time matches the state level closely. On travel time, Middlesex runs shorter than 60% of counties in New Jersey.

Congestion runs 24% higher than the state level, at a ratio of 33.5%, which means more pronounced congestion - crucial for traffic control improvement and logistics planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Middlesex County, New Jersey

Trafficvehicles per day29,642
Trucks10.9%
Average travel time40.2 min
Congestion ratio57.5%
Drivers’ average age46.5 yrs
Drivers’ average income$133,849

A little more than half of the driving in Middlesex County, New Jersey happens on highways: 69% of all vehicle-miles. The average highway carries 29,642 vehicles per day, 207% more than the average non-highway road in the same area, which carries 9,662 vehicles per day.

With 38% of the road miles (356 miles in 3,231 segments), highways punch above their length, carrying 11,271,357 vehicle-miles traveled per day (≈4.1 billion per year).

No county in New Jersey moves more traffic on its highways.

More highway trucks than 90% of counties in New Jersey

Highway truck concentration here runs 6% higher than the state average, at 10.9%. The highway traffic mix is typical for New Jersey: neither freight- nor commuter-dominated.

By truck concentration, highways here outrank 65% of counties in New Jersey. 90% of counties in New Jersey see fewer highway trucks per day than Middlesex's roughly 3,222.

non-highway traffic icon

Non-highway Traffic in Middlesex County, New Jersey

Trafficvehicles per day9,662
Trucks4.5%
Average travel time32.0 min
Congestion ratio30.4%
Drivers’ average age46.1 yrs
Drivers’ average income$135,848

Local roads carry a significant share of travel in Middlesex County, New Jersey: 31% of all vehicle-miles. On the average non-highway road, that comes to 9,662 vehicles per day.

Local roads make up 62% of the monitored road miles (593 miles in 24,650 segments) but carry less than their share of travel: 5,040,896 vehicle-miles traveled per day (≈1.8 billion per year). Trucks make up 4.5% of non-highway traffic, about 1 in 22 vehicles.

Younger drivers than 85% of counties in New Jersey

The concentration of trucks on non-highway roads is 58% lower than on highways.

The non-highway congestion ratio of 30.4% is 25% higher than the state level, suggesting slower local mobility than the state average.

80% of counties in New Jersey see lower average driver income among trip origins than Middlesex. The driver population here skews younger than 85% of counties in New Jersey.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and PM peak 4:00 PM–7:00 PM, with volumes reaching approximately 65% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 19% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
April–June is the high season, with volumes +5% versus the annual average.
Lowest month:
August is the quietest month, with volumes -7% versus the annual average - an unusual summer low, when most places are at their busiest.

Data Finding: Hourly & Seasonal Patterns

In Middlesex County, New Jersey, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +5% in high season.

Middlesex County vs. New Jersey Traffic Comparison

Middlesex County's biggest difference from the New Jersey average is its average daily traffic per road, 35% above it.

MetricMiddlesex CountyNew Jersey averageDifference
Traffic11,9778,886+34.8%
Truck % (Total Traffic)8.9%7.9%+12.4%
Truck % (Highway)10.9%10.2%+6.5%
Avg. Travel Time33.0 min33.4 min-1.1%

How Middlesex County compares

Middlesex County moves more traffic than any nearby county

Set against the average of the 4 areas nearest to it, Middlesex County moves 2.0 times the total daily travel; it has the third busiest roads of the five. It is bigger rather than busier: the extra travel comes from carrying more road, not from heavier roads.

Middlesex 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
Middlesex County11,9778.9%16,312,25333.0 min33.5%
Somerset County, New Jersey7,8547.8%7,289,29333.0 min23.1%
Monmouth County, New Jersey8,1256.1%12,612,79031.5 min25.4%
Richmond County, New York12,4146.0%4,268,92732.2 min29.3%
Union County, New Jersey15,3658.3%8,438,33834.3 min39.7%
New Jersey average8,8867.9%N/A33.4 min27.0%

Middlesex County ranked within New Jersey

Middlesex County posts the highest highway travel volume of any county-level area in New Jersey.

Middlesex County ranked among 21 county-level areas in New Jersey (1 = highest).
MeasureMiddlesex CountyNew Jersey rank
Traffic volume (AADT)11,977#4 of 21
Highway vehicle-miles per day11,271,357#1 of 21
Truck share on highways10.9%#8 of 21
Highway trucks per day3,222#3 of 21
Average travel time33.0 min#13 of 21
Average driver income$134,773#5 of 21
Average driver age46.4 yrs#18 of 21

Middlesex County ranks #1 of 21 on highway travel volume but #18 of 21 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Middlesex County, New Jersey

Traffic concentrates on a few corridors: the three busiest roads average 95,704 vehicles a day, against 11,977 on the average road in Middlesex County.

Garden State Parkway leads with 105,233 vehicles a day, 7,484 of them trucks (7.1%). New Jersey Turnpike carries the most trucks, 11,733 a day (20.6% of its traffic), although it is not among the 5 busiest roads overall.

Trips using New Jersey Turnpike are long: a median of 59.3 minutes against 33.0 county-wide, the mark of a through route.

Trucks make up 20.6% of traffic on New Jersey Turnpike, against 8.9% across all roads in the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Garden State ParkwayMotorway · 105,233vehicles7,484trucks · 7.1%
Road class
Motorway
Congestion ratio
67.0%
Median trip time
46.2 min
Drivers’ median age
48.3 yrs
Drivers’ average income
$135,895

Garden State Parkway carries through traffic: the median trip using it lasts 46.2 minutes, against 33.0 for the county.

2US 1Motorway · 91,943vehicles6,602trucks · 7.2%
Road class
Motorway
Congestion ratio
66.7%
Median trip time
38.5 min
Drivers’ median age
44.1 yrs
Drivers’ average income
$131,079

US 1 carries 7.7 times the county average at its busiest, 6,602 of them trucks (7.2%, below the county-wide 8.9%).

3Middlesex FreewayMotorway · 89,935vehicles6,818trucks · 7.6%
Road class
Motorway
Congestion ratio
82.5%
Median trip time
43.2 min
Drivers’ median age
46.9 yrs
Drivers’ average income
$132,414

Delays build on Middlesex Freeway: its congestion ratio of 82% over free-flow time is well above the county's 34%.

4NJ 440Motorway · 81,508vehicles5,704trucks · 7.0%
Road class
Motorway
Congestion ratio
80.5%
Median trip time
39.9 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$121,765

Travel on NJ 440's busiest stretch runs 81% over free-flow time, against 34% across the county, so expect slower peak hours.

5US 9Motorway · 80,996vehicles6,570trucks · 8.1%
Road class
Motorway
Congestion ratio
63.8%
Median trip time
39.3 min
Drivers’ median age
47.3 yrs
Drivers’ average income
$115,763

US 9 carries 6.8 times the county average on its busiest stretch, where the median trip lasts 39.3 minutes.

Ranked by trucks per day

Cars and light vehiclesTrucks
1New Jersey TurnpikeMotorway · 56,880vehicles11,733trucks · 20.6%
Road class
Motorway
Congestion ratio
44.1%
Median trip time
59.3 min
Drivers’ median age
46.9 yrs
Drivers’ average income
$144,448

New Jersey Turnpike carries 4.7 times the county average at its busiest, 11,733 of them trucks (20.6%, above the county-wide 8.9%).

2Garden State ParkwayMotorway · #1 by traffic105,233vehicles7,484trucks · 7.1%
3Middlesex FreewayMotorway · #3 by traffic89,935vehicles6,818trucks · 7.6%
4US 1Motorway · #2 by traffic91,943vehicles6,602trucks · 7.2%
5US 9Motorway · #5 by traffic80,996vehicles6,570trucks · 8.1%
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

MiddlesexDepartment 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 Middlesex County

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

Need segment-level traffic data?

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