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TrafficThe average number of vehicles that travel each day over any road in the road network. | vehicles per day7,693 |
|---|---|
TrucksThe percentage of the total traffic volume composed of heavy vehicles. | 7.5% |
Average travel timeThe average time of travel averaged among all vehicles traveling on the road network. | 34.0 min |
Congestion ratioThe rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 20.5% |
Drivers’ average ageAverage age of residents in the geographic areas where the vehicle trips originated. | 45.9 yrs |
Drivers’ average incomeAverage 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.
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).
| Traffic | vehicles per day22,767 |
|---|---|
| Trucks | 9.8% |
| Average travel time | 40.4 min |
| Congestion ratio | 48.2% |
| Drivers’ average age | 46.4 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.
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.
| Traffic | vehicles per day6,686 |
|---|---|
| Trucks | 4.7% |
| Average travel time | 33.7 min |
| Congestion ratio | 19.1% |
| Drivers’ average age | 45.8 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.
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.
Maryland's biggest difference from the United States average is its highway truck share, 25% below it. Its truck share is also 20% below.
| Metric | Maryland | United States average | Difference |
|---|---|---|---|
| Traffic | 7,693 | 6,986 | +10.1% |
| Truck % (Total Traffic) | 7.5% | 9.3% | -19.9% |
| Truck % (Highway) | 9.8% | 13.1% | -25.3% |
| Avg. Travel Time | 34.0 min | 33.3 min | +2.1% |
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.
| State | Average daily traffic | Truck share | Daily vehicle-miles | Average travel time | Congestion ratio |
|---|---|---|---|---|---|
| Maryland | 7,693 | 7.5% | 136,921,797 | 34.0 min | 20.5% |
| District of Columbia | 8,168 | 6.0% | 4,142,343 | 38.8 min | 21.6% |
| Delaware | 6,126 | 7.8% | 23,214,793 | 33.6 min | 17.4% |
| Pennsylvania | 5,617 | 10.6% | 219,683,082 | 34.6 min | 16.5% |
| Virginia | 5,349 | 9.6% | 221,943,877 | 31.7 min | 16.8% |
| United States average | 6,986 | 9.3% | N/A | 33.3 min | 18.9% |
Together, those three counties and cities carry 42.6% of all the vehicle-miles measured in the state.
| County or city | Daily vehicle-miles | Average daily traffic | Truck share | Road miles |
|---|---|---|---|---|
| 1. Prince George's County | 21,646,151 | 11,076 | 6.7% | 1,259 |
| 2. Baltimore County | 19,211,871 | 10,478 | 6.8% | 1,346 |
| 3. Montgomery County | 17,486,100 | 8,704 | 5.7% | 1,377 |
Maryland's five most truck-intensive counties and cities account for 17.3% of the truck vehicle-miles driven in the state.
| County or city | Truck share | Truck share on highways | Average daily traffic | Daily vehicle-miles |
|---|---|---|---|---|
| 1. Washington County | 13.9% | 20.2% | 4,572 | 4,960,209 |
| 2. Cecil County | 13.9% | 19.2% | 4,104 | 3,250,798 |
| 3. Allegany County | 13.3% | 18.4% | 4,465 | 1,830,802 |
| 4. Garrett County | 12.8% | 16.4% | 2,427 | 1,290,850 |
| 5. Queen Anne's County | 10.0% | 11.5% | 4,672 | 2,280,072 |
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.
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.
I 95 is one of the more congested roads here: trips take 98% longer than at free-flow speed, against 21% state-wide.
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%.
Delays build on Capital Beltway: its congestion ratio of 97% over free-flow time is well above the state's 21%.
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%).
I 95 carries 20.7 times the state average on its busiest stretch, where the median trip lasts 45.8 minutes.
At 18.8 times the state average, I 95 draws drivers from neighborhoods averaging $105,776 in household income.
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%.
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%.
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%).
I 97 carries 14.1 times the state average on its busiest stretch, where the median trip lasts 44.0 minutes.
At 8.7 times the state average, John F. Kennedy Memorial Highway draws drivers from neighborhoods averaging $99,026 in household income.
John F. Kennedy Memorial Highway leans on freight: 15,718 trucks a day, 17.7% of its traffic against 7.5% state-wide.
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%.
The average monitored road in Maryland carries 7,693 vehicles per day, 10% more than the national average of 6,986.
Maryland carries more highway trucks by raw volume than 94% of states nationwide, at roughly 2,222 per day.
Traffic in Maryland peaks in August–October, when volumes run 5% above the annual average. January is the quietest month, averaging 6,900 vehicles per day, 10% below the annual average.
Trucks make up about 7.5% of all traffic in Maryland, rising to 9.8% on highways, where long-haul freight concentrates.
Drivers on Maryland roads have a median age of 46 years, and the median household income of the neighborhoods trips originate from averages $119,035, 30% above the national average.
Weekday traffic has two busy windows: AM peak 7:00 AM–9:00 AM and PM peak 4:00 PM–7:00 PM - about 65% above the daily average.
The average trip in Maryland takes 34.0 minutes, about the same as the national average, delays at signals and congestion included.
I 95 in Prince George's County carries the most, 185,500 vehicles per day on its busiest stretch, followed by I 95 in Howard County (181,228), Capital Beltway in Prince George's County (172,598), Capital Beltway in Montgomery County (172,340), I 95 in Baltimore County (159,018). Figures are AADT, both directions combined.
I 95 in Prince George's County, with about 17,940 trucks per day on its busiest stretch, 9.7% of its 185,500 vehicles.
About 185,500 vehicles per day in both directions on its busiest stretch, including 17,940 trucks (9.7%). Traffic is lower on its quieter stretches; TrafficZoom shows the count for every segment.

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The same traffic breakdown for the states closest to Maryland.
Identify traffic patterns street by street and analyze the exact corridors that matter to your project.
Traffic counts, truck share, congestion and driver demographics for each of the 24 counties and cities TrafficZoom measures in Maryland.