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

Maryland Traffic Counts

TrafficZoom tracks traffic on 13,627 road miles in Maryland, divided into 328,503 segments averaging 219 ft. Its highways rank among the top 5 states nationwide for trucks per day. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
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 Maryland

Traffic

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

vehicles per day7,693
Trucks

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

7.5%
Average travel time

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

34.0 min
Congestion ratio

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

20.5%
Drivers’ average age

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

45.9 yrs
Drivers’ average income

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

$119,035

Our data shows 7,693 vehicles per day on the average road in Maryland, and 136,921,797 vehicle-miles traveled per day (≈50.0 billion per year) across its 13,627 miles of monitored roads. About 1 in 13 vehicles is a truck, fewer than the 1 in 11 across the US.

Busier roads than 76% of states nationwide

At 7,693 vehicles per day, the average road in Maryland carries somewhat more traffic than the national average of 6,986 (10% more) - a factor worth weighing in site selection and logistics planning. Network-wide, Maryland accounts for about 1.8% of the national total of vehicle-miles. Maryland carries more traffic than 76% of states nationwide.

Journey times here (34.0 minutes on average) closely track the national level. On travel time, Maryland runs longer than 72% of states nationwide.

Congestion is somewhat higher than the national level, at a ratio of 20.5% (9% higher).

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Maryland

Trafficvehicles per day22,767
Trucks9.8%
Average travel time40.4 min
Congestion ratio48.2%
Drivers’ average age46.4 yrs
Drivers’ average income$119,404

A little more than half of the driving in Maryland happens on highways: 56% of all vehicle-miles. The average highway carries 22,767 vehicles per day, 241% more than the average non-highway road in the same area, which carries 6,686 vehicles per day.

With 21% of the road miles (2,839 miles in 20,570 segments), highways punch above their length, carrying 76,080,800 vehicle-miles traveled per day (≈27.8 billion per year).

That is more highway travel volume than 70% of states nationwide.

More highway trucks than 94% of states nationwide

At 9.8%, highway truck share is 25% lower than the national average. Trucks are a small share of a very large highway flow, so Maryland still moves heavy freight volumes alongside its passenger traffic.

By truck concentration, highways here trail 86% of states nationwide. By raw truck volume, Maryland carries more highway trucks than 94% of states nationwide.

non-highway traffic icon

Non-highway Traffic in Maryland

Trafficvehicles per day6,686
Trucks4.7%
Average travel time33.7 min
Congestion ratio19.1%
Drivers’ average age45.8 yrs
Drivers’ average income$118,748

Local roads carry a significant share of travel in Maryland: 44% of all vehicle-miles. On the average non-highway road, that comes to 6,686 vehicles per day.

Local roads make up 79% of the monitored road miles (10,788 miles in 307,933 segments) but carry less than their share of travel: 60,840,998 vehicle-miles traveled per day (≈22.2 billion per year). Trucks make up 4.7% of non-highway traffic, about 1 in 22 vehicles.

Drivers from higher-income areas than 96% of states nationwide

The concentration of trucks on non-highway roads is 52% lower than on highways.

Non-highway congestion here (19.1%) closely tracks the national average.

Maryland's average driver income is higher than 96% of states nationwide. The driver population here skews younger than 52% of states nationwide.

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 14% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
August–October is the high season, with volumes +5% versus the annual average.
Lowest month:
January is the quietest month, with volumes -10% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

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

Maryland vs. United States Traffic Comparison

Maryland's biggest difference from the United States average is its highway truck share, 25% below it. Its truck share is also 20% below.

MetricMarylandUnited States averageDifference
Traffic7,6936,986+10.1%
Truck % (Total Traffic)7.5%9.3%-19.9%
Truck % (Highway)9.8%13.1%-25.3%
Avg. Travel Time34.0 min33.3 min+2.1%

How Maryland compares

Maryland against nearby states

Nothing in this table sets Maryland sharply apart from the 4 states nearest to it, though it has the second busiest roads of the five.

Maryland and the 4 nearest states by centroid distance, with the United States average for scale.
StateAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Maryland7,6937.5%136,921,79734.0 min20.5%
District of Columbia8,1686.0%4,142,34338.8 min21.6%
Delaware6,1267.8%23,214,79333.6 min17.4%
Pennsylvania5,61710.6%219,683,08234.6 min16.5%
Virginia5,3499.6%221,943,87731.7 min16.8%
United States average6,9869.3%N/A33.3 min18.9%

Busiest counties and cities in Maryland

Together, those three counties and cities carry 42.6% of all the vehicle-miles measured in the state.

Ranked by daily vehicle-miles, across the 24 counties and cities in Maryland 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.
County or cityDaily vehicle-milesAverage daily trafficTruck shareRoad miles
1. Prince George's County21,646,15111,0766.7%1,259
2. Baltimore County19,211,87110,4786.8%1,346
3. Montgomery County17,486,1008,7045.7%1,377

Most truck-intensive counties and cities in Maryland

Maryland's five most truck-intensive counties and cities account for 17.3% of the truck vehicle-miles driven in the state.

Ranked by truck share of all traffic, across the same 24 counties and cities, shown with the traffic volume that share is measured against.
County or cityTruck shareTruck share on highwaysAverage daily trafficDaily vehicle-miles
1. Washington County13.9%20.2%4,5724,960,209
2. Cecil County13.9%19.2%4,1043,250,798
3. Allegany County13.3%18.4%4,4651,830,802
4. Garrett County12.8%16.4%2,4271,290,850
5. Queen Anne's County10.0%11.5%4,6722,280,072

Asking the same question of truck vehicle-miles gives a different answer - Prince George's County, Baltimore County, Anne Arundel County, Montgomery County and Howard County, together 53.0% of all truck travel in Maryland.

Busiest roads in Maryland

On their busiest stretches, the three busiest roads in Maryland carry 179,775 vehicles a day on average, 23.4 times the typical road in the state (7,693).

I 95 in Prince George's County is the busiest road, at 185,500 vehicles a day, 17,940 of them trucks (9.7%). I 95 in Howard County is practically level with it at 181,228. It tops the truck ranking too, with the most trucks.

Trucks make up 24.9% of traffic on John F. Kennedy Memorial Highway in Cecil County and 19.7% on Maryland Veterans Memorial Highway in Washington County, against 7.5% across all roads in the state.

Trips using John F. Kennedy Memorial Highway in Cecil County are long: a median of 65.6 minutes against 34.0 state-wide, the mark of a through route.

I 270 Spur in Montgomery County draws drivers from wealthier areas: their neighborhoods average $171,038 in household income, 44% above the state's $119,035, while those on Maryland Veterans Memorial Highway in Washington County average $83,733, 30% below it.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 95Prince George's County · Motorway · 185,500vehicles17,940trucks · 9.7%
Road class
Motorway
Congestion ratio
97.9%
Median trip time
48.4 min
Drivers’ median age
42.7 yrs
Drivers’ average income
$125,787

I 95 is one of the more congested roads here: trips take 98% longer than at free-flow speed, against 21% state-wide.

2I 95Howard County · Motorway · 181,228vehicles17,070trucks · 9.4%
Road class
Motorway
Congestion ratio
97.0%
Median trip time
47.9 min
Drivers’ median age
42.7 yrs
Drivers’ average income
$128,662

I 95 is a trunk route for the state, carrying 23.6 times the state average on its busiest stretch; trucks are 9.4% of it, above the state-wide 7.5%.

3Capital BeltwayPrince George's County · Motorway · 172,598vehicles13,808trucks · 8.0%
Road class
Motorway
Congestion ratio
97.5%
Median trip time
44.0 min
Drivers’ median age
45.2 yrs
Drivers’ average income
$118,597

Delays build on Capital Beltway: its congestion ratio of 97% over free-flow time is well above the state's 21%.

4Capital BeltwayMontgomery County · Motorway · 172,340vehicles13,368trucks · 7.8%
Road class
Motorway
Congestion ratio
96.9%
Median trip time
46.0 min
Drivers’ median age
44.0 yrs
Drivers’ average income
$146,855

Capital Beltway carries 22.4 times the state average at its busiest, 13,368 of them trucks (7.8%, in line with the state-wide 7.5%).

5I 95Baltimore County · Motorway · 159,018vehicles16,348trucks · 10.3%
Road class
Motorway
Congestion ratio
82.1%
Median trip time
45.8 min
Drivers’ median age
42.8 yrs
Drivers’ average income
$115,183

I 95 carries 20.7 times the state average on its busiest stretch, where the median trip lasts 45.8 minutes.

6I 95Baltimore City · Motorway · 144,740vehicles15,702trucks · 10.8%
Road class
Motorway
Congestion ratio
96.1%
Median trip time
44.3 min
Drivers’ median age
43.3 yrs
Drivers’ average income
$105,776

At 18.8 times the state average, I 95 draws drivers from neighborhoods averaging $105,776 in household income.

7Baltimore BeltwayBaltimore County · Motorway · 117,154vehicles8,749trucks · 7.5%
Road class
Motorway
Congestion ratio
79.5%
Median trip time
40.4 min
Drivers’ median age
46.2 yrs
Drivers’ average income
$108,069

A main artery: Baltimore Beltway's busiest stretch carries 15.2 times the state average; trucks are 7.5% of it, in line with the state-wide 7.5%.

8John F. Kennedy Memorial HighwayBaltimore County · Motorway · 111,655vehicles13,110trucks · 11.7%
Road class
Motorway
Congestion ratio
60.8%
Median trip time
45.2 min
Drivers’ median age
45.5 yrs
Drivers’ average income
$111,274

John F. Kennedy Memorial Highway is a trunk route for the state, carrying 14.5 times the state average on its busiest stretch; trucks are 11.7% of it, above the state-wide 7.5%.

9I 270 SpurMontgomery County · Motorway · 109,896vehicles10,997trucks · 10.0%
Road class
Motorway
Congestion ratio
73.6%
Median trip time
43.6 min
Drivers’ median age
47.1 yrs
Drivers’ average income
$171,038

I 270 Spur carries 14.3 times the state average at its busiest, 10,997 of them trucks (10.0%, above the state-wide 7.5%).

10I 97Anne Arundel County · Motorway · 108,771vehicles8,060trucks · 7.4%
Road class
Motorway
Congestion ratio
78.2%
Median trip time
44.0 min
Drivers’ median age
45.3 yrs
Drivers’ average income
$133,137

I 97 carries 14.1 times the state average on its busiest stretch, where the median trip lasts 44.0 minutes.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 95Prince George's County · Motorway · #1 by traffic185,500vehicles17,940trucks · 9.7%
2I 95Howard County · Motorway · #2 by traffic181,228vehicles17,070trucks · 9.4%
3John F. Kennedy Memorial HighwayCecil County · Motorway · 66,736vehicles16,595trucks · 24.9%
Road class
Motorway
Congestion ratio
40.2%
Median trip time
65.6 min
Drivers’ median age
45.6 yrs
Drivers’ average income
$99,026

At 8.7 times the state average, John F. Kennedy Memorial Highway draws drivers from neighborhoods averaging $99,026 in household income.

4I 95Baltimore County · Motorway · #5 by traffic159,018vehicles16,348trucks · 10.3%
5John F. Kennedy Memorial HighwayHarford County · Motorway · 88,589vehicles15,718trucks · 17.7%
Road class
Motorway
Congestion ratio
62.5%
Median trip time
50.6 min
Drivers’ median age
45.5 yrs
Drivers’ average income
$109,869

John F. Kennedy Memorial Highway leans on freight: 15,718 trucks a day, 17.7% of its traffic against 7.5% state-wide.

6I 95Baltimore City · Motorway · #6 by traffic144,740vehicles15,702trucks · 10.8%
7Capital BeltwayPrince George's County · Motorway · #3 by traffic172,598vehicles13,808trucks · 8.0%
8Capital BeltwayMontgomery County · Motorway · #4 by traffic172,340vehicles13,368trucks · 7.8%
9John F. Kennedy Memorial HighwayBaltimore County · Motorway · #8 by traffic111,655vehicles13,110trucks · 11.7%
10Maryland Veterans Memorial HighwayWashington County · Motorway · 63,418vehicles12,491trucks · 19.7%
Road class
Motorway
Congestion ratio
65.8%
Median trip time
40.1 min
Drivers’ median age
48.1 yrs
Drivers’ average income
$83,733

A main artery: Maryland Veterans Memorial Highway's busiest stretch carries 8.2 times the state average; trucks are 19.7% of it, above the state-wide 7.5%.

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

MarylandDepartment 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

— street-level analytics and custom corridor reports.

Map AI

— demographics, housing and mobility data.

States near Maryland

The same traffic breakdown for the states closest to Maryland.

Need segment-level traffic data?

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

Counties and cities in Maryland

Traffic counts, truck share, congestion and driver demographics for each of the 24 counties and cities TrafficZoom measures in Maryland.