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Traffic heat map of Howard County, Maryland: 609 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 95

Howard County, Maryland Traffic Counts

Traffic analytics for Howard County, Maryland, calculated from real-world mobile and sensor networks on 15,650 road segments (609 road miles, about 205 ft each). Its drivers come from the highest-income neighborhoods of any county in Maryland, averaging $156,139. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
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 Howard County, Maryland

Traffic

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

vehicles per day8,078
Trucks

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

7.3%
Average travel time

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

31.5 min
Congestion ratio

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

18.7%
Drivers’ average age

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

44.3 yrs
Drivers’ average income

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

$156,139

A typical monitored road in Howard County, Maryland sees 8,078 vehicles per day, while its 609 miles of monitored roads together handle 9,629,640 vehicle-miles traveled per day (≈3.5 billion per year). About 1 in 14 vehicles is a truck, in line with Maryland (7.5%).

Shorter trips than 83% of counties in Maryland

At 8,078 vehicles per day, the average road in Howard tracks closely with the state average of 7,693 vehicles per day. Network-wide, Howard accounts for about 7.0% of Maryland's statewide total of vehicle-miles. Howard carries more traffic than 78% of counties in Maryland.

The average trip takes 31.5 minutes, 7% lower than the state level. Its average travel time of 31.5 minutes is shorter than 83% of counties in Maryland.

The congestion ratio of 18.7% runs slightly lower than the state level (9% lower).

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Howard County, Maryland

Trafficvehicles per day38,516
Trucks8.6%
Average travel time41.9 min
Congestion ratio61.0%
Drivers’ average age44.0 yrs
Drivers’ average income$150,234

A little more than half of the driving in Howard County, Maryland happens on highways: 67% of all vehicle-miles. The average highway carries 38,516 vehicles per day, 469% more than the average non-highway road in the same area, which carries 6,772 vehicles per day.

With 26% of the road miles (160 miles in 644 segments), highways punch above their length, carrying 6,459,671 vehicle-miles traveled per day (≈2.4 billion per year).

That puts Howard among the top 5 counties in Maryland for highway travel volume.

More highway trucks than 87% of counties in Maryland

At 8.6%, highway truck share is 12% lower than the state average. The highway traffic mix is typical for Maryland: neither freight- nor commuter-dominated.

By truck concentration, highways here trail 63% of counties in Maryland. 87% of counties in Maryland see fewer highway trucks per day than Howard's roughly 3,305.

non-highway traffic icon

Non-highway Traffic in Howard County, Maryland

Trafficvehicles per day6,772
Trucks4.6%
Average travel time31.1 min
Congestion ratio16.9%
Drivers’ average age44.8 yrs
Drivers’ average income$163,235

Local roads carry a significant share of travel in Howard County, Maryland: 33% of all vehicle-miles. On the average non-highway road, that comes to 6,772 vehicles per day.

Spread over 449 miles and 15,006 segments, 74% of the road network, local roads carry a lighter load per mile: 3,169,968 vehicle-miles traveled per day (≈1.2 billion per year). About 1 in 22 vehicles on non-highway roads is a truck (4.6%).

The highest driver income of any county in Maryland

Compared to highways, non-highway routes see 47% fewer trucks by share.

Non-highway congestion (16.9%) runs slightly lower than the state level (11% lower).

At $156,139, the average driver income for trips originating here is the highest in Maryland. 96% of counties in Maryland have an older driver population than Howard.

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 73% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 21% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
Traffic is nearly flat through the year: even May–July, the busiest stretch, runs only +3% versus the annual average.
Lowest month:
January is the quietest month, with volumes -8% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Howard County, Maryland, the peak hour concentrates about 7% of the day's traffic, and traffic stays steady through the year (+3% in high season).

Howard County vs. Maryland Traffic Comparison

Howard County stays close to the Maryland average; the largest gap is its highway truck share, 12% below.

MetricHoward CountyMaryland averageDifference
Traffic8,0787,693+5.0%
Truck % (Total Traffic)7.3%7.5%-3.1%
Truck % (Highway)8.6%9.8%-12.1%
Avg. Travel Time31.5 min34.0 min-7.3%

How Howard County compares

Howard County against nearby counties and cities

Howard County tracks the 4 areas around it closely - no measure in this table sets it far apart from the areas immediately next to it, though it has the fourth busiest roads of the five.

Howard County and the 4 nearest county-level areas by centroid distance, with the Maryland average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Howard County8,0787.3%9,629,64031.5 min18.7%
Baltimore City, Maryland10,2026.7%7,782,61338.1 min25.4%
Montgomery County, Maryland8,7045.7%17,486,10035.5 min21.0%
Baltimore County, Maryland10,4786.8%19,211,87134.2 min23.6%
Carroll County, Maryland4,5206.5%3,223,15631.9 min13.4%
Maryland average7,6937.5%N/A34.0 min20.5%

Howard County ranked within Maryland

Howard County posts the highest average driver income of any county-level area in Maryland.

Howard County ranked among 24 county-level areas in Maryland (1 = highest).
MeasureHoward CountyMaryland rank
Traffic volume (AADT)8,078#6 of 24
Highway vehicle-miles per day6,459,671#5 of 24
Truck share on highways8.6%#15 of 24
Highway trucks per day3,305#4 of 24
Average travel time31.5 min#20 of 24
Average driver income$156,139#1 of 24
Average driver age44.3 yrs#23 of 24

Howard County ranks #1 of 24 on average driver income but #23 of 24 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Howard County, Maryland

The three busiest roads in Howard County average 119,248 vehicles a day, 14.8 times the county average of 8,078 across all its monitored roads.

I 95 is the busiest road, at 181,228 vehicles a day, 17,070 of them trucks (9.4%). No other road comes close: Paul T. Pitcher Memorial Highway, in second place, carries 91,408. It also carries the most trucks.

Trips using I 70 are long: a median of 48.7 minutes against 31.5 county-wide, the mark of a through route.

Freight stands out on I 70: trucks are 13.4% of the traffic there, against 7.3% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 95Motorway · 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

Travel on I 95's busiest stretch runs 97% over free-flow time, against 19% across the county, so expect slower peak hours.

2Paul T. Pitcher Memorial HighwayMotorway · 91,408vehicles7,874trucks · 8.6%
Road class
Motorway
Median trip time
34.9 min
Drivers’ median age
44.5 yrs
Drivers’ average income
$138,646

A main artery: Paul T. Pitcher Memorial Highway's busiest stretch carries 11.3 times the county average; trucks are 8.6% of it, above the county-wide 7.3%.

3Columbia PikeMotorway · 85,106vehicles3,560trucks · 4.2%
Road class
Motorway
Congestion ratio
61.8%
Median trip time
33.5 min
Drivers’ median age
45.0 yrs
Drivers’ average income
$154,919

Columbia Pike is a trunk route for the county, carrying 10.5 times the county average on its busiest stretch; trucks are 4.2% of it, below the county-wide 7.3%.

4MD 100Motorway · 78,954vehicles4,331trucks · 5.5%
Road class
Motorway
Congestion ratio
68.8%
Median trip time
33.7 min
Drivers’ median age
44.7 yrs
Drivers’ average income
$148,698

MD 100 is one of the more congested roads here: trips take 69% longer than at free-flow speed, against 19% county-wide.

5I 70Motorway · 73,627vehicles9,889trucks · 13.4%
Road class
Motorway
Congestion ratio
52.3%
Median trip time
48.7 min
Drivers’ median age
46.5 yrs
Drivers’ average income
$155,907

I 70 carries 9.1 times the county average at its busiest, 9,889 of them trucks (13.4%, above the county-wide 7.3%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 95Motorway · #1 by traffic181,228vehicles17,070trucks · 9.4%
2I 70Motorway · #5 by traffic73,627vehicles9,889trucks · 13.4%
3Paul T. Pitcher Memorial HighwayMotorway · #2 by traffic91,408vehicles7,874trucks · 8.6%
4Patuxent FreewayMotorway · 66,023vehicles4,593trucks · 7.0%
Road class
Motorway
Congestion ratio
65.3%
Median trip time
35.2 min
Drivers’ median age
44.0 yrs
Drivers’ average income
$166,511

Patuxent Freeway carries 8.2 times the county average on its busiest stretch, where the median trip lasts 35.2 minutes.

5MD 100Motorway · #4 by traffic78,954vehicles4,331trucks · 5.5%
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

HowardDepartment 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 Howard County

The same traffic breakdown for the areas closest to Howard County, Maryland.

Need segment-level traffic data?

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