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Traffic heat map of Connecticut: roads over 1,000 vehicles a day shaded from blue (light) to red (heavy traffic), busiest on I 84 and I 95

Connecticut Traffic Counts

Our Connecticut traffic data covers 229,684 road segments over 7,552 road miles, with an average segment of just 174 ft. Its drivers come from neighborhoods among the top 5 states nationwide for household income. 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 icon

Total Traffic Volume & Performance in Connecticut

Traffic

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

vehicles per day6,794
Trucks

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

8.4%
Average travel time

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

33.2 min
Congestion ratio

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

17.2%
Drivers’ average age

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

47.7 yrs
Drivers’ average income

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

$112,144

A typical monitored road in Connecticut sees 6,794 vehicles per day, while its 7,552 miles of monitored roads together handle 63,263,073 vehicle-miles traveled per day (≈23.1 billion per year). About 1 in 12 vehicles is a truck, in line with the US (9.3%).

Analytical insight

At 6,794 vehicles per day, the average road in Connecticut tracks closely with the national average of 6,986 vehicles per day. In total volume terms, its road network carries about 0.8% of the national total of vehicle-miles. By volume, Connecticut's 6,794 vehicles per day outpaces 60% of states nationwide.

The average trip takes 33.2 minutes, on par with the national level. 50% of states nationwide have a shorter average travel time than Connecticut's 33.2 minutes.

Congestion is somewhat lower than the national level, at a ratio of 17.2% (9% lower).

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Connecticut

Trafficvehicles per day16,631
Trucks11.8%
Average travel time40.4 min
Congestion ratio37.6%
Drivers’ average age47.8 yrs
Drivers’ average income$111,789

Travel in Connecticut splits roughly evenly, with about half of it (53% of vehicle-miles) on highways. The average highway carries 16,631 vehicles per day, 180% more than the average non-highway road in the same area, which carries 5,931 vehicles per day.

Highways make up 22% of the monitored road miles (1,686 miles, 18,530 segments), so they carry more than their share: 33,696,123 vehicle-miles traveled per day (≈12.3 billion per year).

More highway trucks than 84% of states nationwide

At 11.8%, highway truck share is 10% lower than the national average. The highway traffic mix is typical for the US: neither freight- nor commuter-dominated.

Connecticut's highway truck share (11.8%) is lower than 68% of states nationwide. Connecticut's highway truck count is higher than 84% of states nationwide, at roughly 1,962 trucks per day.

non-highway traffic icon

Non-highway Traffic in Connecticut

Trafficvehicles per day5,931
Trucks4.5%
Average travel time32.7 min
Congestion ratio15.8%
Drivers’ average age47.7 yrs
Drivers’ average income$112,534

Travel in Connecticut splits roughly evenly, with about half of it (47% of vehicle-miles) on local roads. On the average non-highway road, that comes to 5,931 vehicles per day.

Local roads make up 78% of the monitored road miles (5,866 miles in 211,154 segments) but carry less than their share of travel: 29,566,951 vehicle-miles traveled per day (≈10.8 billion per year). The truck share on non-highway roads is 4.5%.

Drivers from higher-income areas than 92% of states nationwide

The concentration of trucks on non-highway roads is 62% lower than on highways.

Non-highway congestion (15.8%) runs slightly lower than the national level (14% lower).

Trip origins here have higher average income than 92% of states nationwide. 80% of states nationwide have a younger driver population than Connecticut.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and a long afternoon plateau from 12:00 PM to 7:00 PM, with volumes reaching approximately 68% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 14% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +6% versus the annual average.
Lowest month:
January is the quietest month, with volumes -9% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Connecticut, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +6% in high season.

Connecticut vs. United States Traffic Comparison

Connecticut stays close to the United States average; the largest gap is its truck share, 10% below.

MetricConnecticutUnited States averageDifference
Traffic6,7946,986-2.7%
Truck % (Total Traffic)8.4%9.3%-10.4%
Truck % (Highway)11.8%13.1%-9.7%
Avg. Travel Time33.2 min33.3 min-0.3%

How Connecticut compares

Connecticut is the least congested of its nearby states

Against the 4 nearest states, Connecticut is 27.5% less congested and moves 44.4% of the total daily travel; it has the quietest roads of the five.

Connecticut and the 4 nearest states by centroid distance, with the United States average for scale.
StateAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Connecticut6,7948.4%63,263,07333.2 min17.2%
Rhode Island7,8707.0%19,159,97535.2 min23.3%
Massachusetts8,1666.9%136,116,24234.4 min24.0%
New Jersey8,8867.9%153,828,65033.4 min27.0%
New York7,3778.0%260,437,93934.7 min20.7%
United States average6,9869.3%N/A33.3 min18.9%

Busiest counties in Connecticut

Together, those three counties carry 71.4% of all the vehicle-miles measured in the state.

Ranked by daily vehicle-miles, across the 8 counties in Connecticut with a published traffic page. Vehicle-miles is total travel, so this ranks by traffic MOVED rather than by how busy a typical road is.
CountyDaily vehicle-milesAverage daily trafficTruck shareRoad miles
1. Hartford County16,835,8297,7117.8%1,654
2. New Haven County14,364,5177,4778.5%1,461
3. Fairfield County13,991,0907,7778.1%1,346

Most truck-intensive counties in Connecticut

Connecticut's three most truck-intensive counties account for 23.9% of the truck vehicle-miles driven in the state.

Ranked by truck share of all traffic, across the same 8 counties, shown with the traffic volume that share is measured against.
CountyTruck shareTruck share on highwaysAverage daily trafficDaily vehicle-miles
1. Tolland County10.8%17.0%5,3783,071,321
2. New London County9.8%13.1%5,7825,951,518
3. Middlesex County9.1%11.9%5,5423,838,692

Asking the same question of truck vehicle-miles gives a different answer - Hartford County, New Haven County, Fairfield County, New London County and Middlesex County, together 86.6% of all truck travel in Connecticut.

Busiest roads in Connecticut

On their busiest stretches, the three busiest roads in Connecticut carry 88,307 vehicles a day on average, 13.0 times the typical road in the state (6,794).

I 84 in Hartford County leads with 91,950 vehicles a day, 9,207 of them trucks (10.0%). I 91 in Middlesex County carries the most trucks, 13,816 a day (16.1% of its traffic), although it ranks #3 for all traffic.

Freight stands out on CT 15 in Hartford County and I 84 in Tolland County: trucks are 21.3% and 20.2% of the traffic there, against 8.4% state-wide.

Trips using I 84 in Tolland County are long: a median of 59.5 minutes against 33.2 state-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 84Hartford County · Motorway · 91,950vehicles9,207trucks · 10.0%
Road class
Motorway
Congestion ratio
50.2%
Median trip time
38.1 min
Drivers’ median age
47.0 yrs
Drivers’ average income
$102,900

At 13.5 times the state average, I 84 draws drivers from neighborhoods averaging $102,900 in household income.

2I 95Fairfield County · Motorway · 87,358vehicles13,718trucks · 15.7%
Road class
Motorway
Congestion ratio
66.7%
Median trip time
46.8 min
Drivers’ median age
46.9 yrs
Drivers’ average income
$130,154

Delays build on I 95: its congestion ratio of 67% over free-flow time is well above the state's 17%.

3I 91Middlesex County · Motorway · 85,613vehicles13,816trucks · 16.1%
Road class
Motorway
Congestion ratio
65.3%
Median trip time
49.5 min
Drivers’ median age
47.8 yrs
Drivers’ average income
$107,990

Travel on I 91's busiest stretch runs 65% over free-flow time, against 17% across the state, so expect slower peak hours.

4I 91Hartford County · Motorway · 80,989vehicles10,680trucks · 13.2%
Road class
Motorway
Congestion ratio
55.1%
Median trip time
44.2 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$98,798

A main artery: I 91's busiest stretch carries 11.9 times the state average; trucks are 13.2% of it, above the state-wide 8.4%.

5I 95New London County · Motorway · 80,079vehicles8,544trucks · 10.7%
Road class
Motorway
Congestion ratio
43.4%
Median trip time
39.4 min
Drivers’ median age
49.4 yrs
Drivers’ average income
$94,109

I 95 is a trunk route for the state, carrying 11.8 times the state average on its busiest stretch; trucks are 10.7% of it, above the state-wide 8.4%.

6I 84Fairfield County · Motorway · 76,567vehicles6,528trucks · 8.5%
Road class
Motorway
Congestion ratio
58.3%
Median trip time
43.3 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$118,151

I 84 carries 11.3 times the state average at its busiest, 6,528 of them trucks (8.5%, in line with the state-wide 8.4%).

7Merritt ParkwayNew Haven County · Motorway · 76,117vehicles5,673trucks · 7.5%
Road class
Motorway
Congestion ratio
59.1%
Median trip time
41.1 min
Drivers’ median age
49.0 yrs
Drivers’ average income
$131,033

Merritt Parkway carries 11.2 times the state average on its busiest stretch, where the median trip lasts 41.1 minutes.

8I 95New Haven County · Motorway · 69,974vehicles10,070trucks · 14.4%
Road class
Motorway
Congestion ratio
62.0%
Median trip time
45.0 min
Drivers’ median age
48.5 yrs
Drivers’ average income
$104,308

At 10.3 times the state average, I 95 draws drivers from neighborhoods averaging $104,308 in household income.

9I 91New Haven County · Motorway · 61,892vehicles9,793trucks · 15.8%
Road class
Motorway
Congestion ratio
45.7%
Median trip time
39.6 min
Drivers’ median age
46.7 yrs
Drivers’ average income
$99,726

A freight route: trucks are 15.8% of the traffic on I 91's busiest stretch, 1.9 times the state-wide 8.4%.

10I 84New Haven County · Motorway · 57,035vehicles6,818trucks · 11.9%
Road class
Motorway
Congestion ratio
50.2%
Median trip time
47.0 min
Drivers’ median age
48.4 yrs
Drivers’ average income
$106,492

A main artery: I 84's busiest stretch carries 8.4 times the state average; trucks are 11.9% of it, above the state-wide 8.4%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 91Middlesex County · Motorway · #3 by traffic85,613vehicles13,816trucks · 16.1%
2I 95Fairfield County · Motorway · #2 by traffic87,358vehicles13,718trucks · 15.7%
3I 91Hartford County · Motorway · #4 by traffic80,989vehicles10,680trucks · 13.2%
4I 95New Haven County · Motorway · #8 by traffic69,974vehicles10,070trucks · 14.4%
5I 91New Haven County · Motorway · #9 by traffic61,892vehicles9,793trucks · 15.8%
6CT 15Hartford County · Motorway · 44,328vehicles9,436trucks · 21.3%
Road class
Motorway
Congestion ratio
52.9%
Median trip time
49.5 min
Drivers’ median age
45.2 yrs
Drivers’ average income
$102,779

CT 15 carries through traffic: the median trip using it lasts 49.5 minutes, against 33.2 for the state.

7I 84Hartford County · Motorway · #1 by traffic91,950vehicles9,207trucks · 10.0%
8I 84Tolland County · Motorway · 44,079vehicles8,910trucks · 20.2%
Road class
Motorway
Congestion ratio
31.4%
Median trip time
59.5 min
Drivers’ median age
44.9 yrs
Drivers’ average income
$120,020

I 84 is a trunk route for the state, carrying 6.5 times the state average on its busiest stretch; trucks are 20.2% of it, above the state-wide 8.4%.

9I 95New London County · Motorway · #5 by traffic80,079vehicles8,544trucks · 10.7%
10I 84New Haven County · Motorway · #10 by traffic57,035vehicles6,818trucks · 11.9%
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

ConnecticutDepartment 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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TrafficZoom platform

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— demographics, housing and mobility data.

States near Connecticut

The same traffic breakdown for the states closest to Connecticut.

Need segment-level traffic data?

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

Counties in Connecticut

Traffic counts, truck share, congestion and driver demographics for each of the 8 counties TrafficZoom measures in Connecticut.