Need segment-level traffic data?

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

Get insights →
Traffic heat map of Adams County, Pennsylvania: 555 miles of roads shaded from blue (light) to red (heavy traffic), busiest on US 15 and Hanover Street

Adams County, Pennsylvania Traffic Counts

Its busiest road, US 15, carries 19,145 vehicles a day, 4.6 times the average road. This page breaks down traffic in Adams County, Pennsylvania across 555 miles of monitored roads split into 9,748 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
Find my place
total traffic icon

Total Traffic Volume & Performance in Adams County, Pennsylvania

Traffic

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

vehicles per day4,147
Trucks

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

9.6%
Average travel time

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

34.8 min
Congestion ratio

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

13.3%
Drivers’ average age

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

50.9 yrs
Drivers’ average income

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

$87,122

The average monitored road in Adams County, Pennsylvania carries 4,147 vehicles per day. Across its 555 miles of monitored roads, that adds up to 2,092,304 vehicle-miles traveled per day (≈764 million per year). Trucks are 9.6% of traffic, close to the 10.6% across Pennsylvania.

Longer trips than 71% of counties in Pennsylvania

At 4,147 vehicles per day, the average monitored road in Adams carries 26% less traffic than the state average of 5,617, suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Across the whole network, that travel is about 1.0% of Pennsylvania's statewide total. By volume, Adams's 4,147 vehicles per day outpaces 64% of counties in Pennsylvania.

Journey times here (34.8 minutes on average) closely track the state level. Its average travel time of 34.8 minutes is longer than 71% of counties in Pennsylvania.

The congestion ratio of 13.3% is 19% lower, pointing to smoother traffic flow than the state level - crucial for traffic control improvement and logistics planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Adams County, Pennsylvania

Trafficvehicles per day10,122
Trucks13.4%
Average travel time38.0 min
Congestion ratio27.9%
Drivers’ average age50.9 yrs
Drivers’ average income$87,246

Highways carry about half of all travel in Adams County, Pennsylvania, 50% of vehicle-miles. The average highway carries 10,122 vehicles per day, 260% more than the average non-highway road in the same area, which carries 2,809 vehicles per day.

With 21% of the road miles (114 miles in 1,783 segments), highways punch above their length, carrying 1,040,666 vehicle-miles traveled per day (≈380 million per year).

Fewer highway trucks than 75% of counties in Pennsylvania

Highway truck concentration here runs 15% lower than the state average, at 13.4%. The highway traffic mix is typical for Pennsylvania: neither freight- nor commuter-dominated.

Adams's highway truck share (13.4%) is lower than 68% of counties in Pennsylvania. 75% of counties in Pennsylvania see more highway trucks per day than Adams's roughly 1,358.

non-highway traffic icon

Non-highway Traffic in Adams County, Pennsylvania

Trafficvehicles per day2,809
Trucks5.9%
Average travel time34.1 min
Congestion ratio10.1%
Drivers’ average age50.7 yrs
Drivers’ average income$87,041

Local roads carry about half of all travel in Adams County, Pennsylvania, 50% of vehicle-miles. The average non-highway road carries 2,809 vehicles per day.

Local roads make up 79% of the monitored road miles (441 miles in 7,965 segments) but carry less than their share of travel: 1,051,638 vehicle-miles traveled per day (≈384 million per year). About 1 in 17 vehicles on non-highway roads is a truck (5.9%).

Drivers from higher-income areas than 79% of counties in Pennsylvania

Compared to highways, non-highway routes see 56% fewer trucks by share.

At 36% lower than the state level, the non-highway congestion ratio of 10.1% signals easier movement on local roads.

79% of counties in Pennsylvania see lower average driver income among trip origins than Adams. 56% of counties in Pennsylvania have a younger driver population than Adams.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and PM peak 4:00 PM–6:00 PM, with volumes reaching approximately 78% higher than the daily average.
Weekend traffic:
Weekends are busier than weekdays: volumes run about 10% above weekday levels, which usually points to leisure, tourism or shopping traffic.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +12% versus the annual average.
Lowest month:
January is the quietest month, with volumes -21% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Adams County, Pennsylvania, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +12% in high season.

Adams County vs. Pennsylvania Traffic Comparison

Adams County's biggest difference from the Pennsylvania average is its average daily traffic per road, 26% below it.

MetricAdams CountyPennsylvania averageDifference
Traffic4,1475,617-26.2%
Truck % (Total Traffic)9.6%10.6%-9.5%
Truck % (Highway)13.4%15.8%-14.8%
Avg. Travel Time34.8 min34.6 min+0.5%

How Adams County compares

Adams County moves the least traffic of its nearby counties

Against the 4 nearest areas, Adams County moves 41.0% of the total daily travel; it has the quietest roads of the five.

Adams County and the 4 nearest county-level areas by centroid distance, with the Pennsylvania average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Adams County4,1479.6%2,092,30434.8 min13.3%
Cumberland County, Pennsylvania6,23517.2%6,240,72734.3 min17.0%
York County, Pennsylvania4,8568.7%7,458,70333.6 min15.8%
Carroll County, Maryland4,5206.5%3,223,15631.9 min13.4%
Franklin County, Pennsylvania4,21215.8%3,495,74831.5 min13.5%
Pennsylvania average5,61710.6%N/A34.6 min16.5%

Adams County ranked within Pennsylvania

Adams County sits in the top quarter of the Pennsylvania field on average driver income, at #15 of 67.

Adams County ranked among 67 county-level areas in Pennsylvania (1 = highest); measures without data in every county rank a smaller field, down to 64.
MeasureAdams CountyPennsylvania rank
Traffic volume (AADT)4,147#25 of 67
Highway vehicle-miles per day1,040,666#33 of 64
Truck share on highways13.4%#44 of 64
Highway trucks per day1,358#48 of 64
Average travel time34.8 min#20 of 67
Average driver income$87,122#15 of 67
Average driver age50.9 yrs#30 of 67

Busiest roads in Adams County, Pennsylvania

Traffic concentrates on a few corridors: the three busiest roads average 18,407 vehicles a day, against 4,147 on the average road in Adams County.

US 15 is the busiest road, at 19,145 vehicles a day, 3,831 of them trucks (20.0%). Hanover Street is practically level with it at 19,049. It also carries the most trucks.

Trucks make up 20.0% of traffic on US 15, against 9.6% across all roads in the county.

Trips using US 15 are long: a median of 52.4 minutes against 34.8 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1US 15Trunk road · 19,145vehicles3,831trucks · 20.0%
Road class
Trunk road
Congestion ratio
20.8%
Median trip time
52.4 min
Drivers’ median age
50.8 yrs
Drivers’ average income
$89,278

US 15 carries 4.6 times the county average on its busiest stretch, where the median trip lasts 52.4 minutes.

2Hanover StreetPrimary road · 19,049vehicles1,246trucks · 6.5%
Road class
Primary road
Congestion ratio
46.0%
Median trip time
49.7 min
Drivers’ median age
50.1 yrs
Drivers’ average income
$97,318

Travel on Hanover Street's busiest stretch runs 46% over free-flow time, against 13% across the county, so expect slower peak hours.

3York StreetTrunk road · 17,026vehicles976trucks · 5.7%
Road class
Trunk road
Congestion ratio
53.2%
Median trip time
39.5 min
Drivers’ median age
50.9 yrs
Drivers’ average income
$88,352

York Street is one of the more congested roads here: trips take 53% longer than at free-flow speed, against 13% county-wide.

4King StreetTrunk road · 15,174vehicles1,165trucks · 7.7%
Road class
Trunk road
Congestion ratio
44.2%
Median trip time
36.6 min
Drivers’ median age
51.5 yrs
Drivers’ average income
$85,437

At 3.7 times the county average, King Street draws drivers from neighborhoods averaging $85,437 in household income.

5York RoadTrunk road · 14,611vehicles943trucks · 6.5%
Road class
Trunk road
Congestion ratio
30.9%
Median trip time
36.5 min
Drivers’ median age
50.6 yrs
Drivers’ average income
$89,677

The busiest stretch of York Road carries 3.5 times the county average; trucks are 6.5% of it, below the county-wide 9.6%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1US 15Trunk road · #1 by traffic19,145vehicles3,831trucks · 20.0%
2Hanover StreetPrimary road · #2 by traffic19,049vehicles1,246trucks · 6.5%
3King StreetTrunk road · #4 by traffic15,174vehicles1,165trucks · 7.7%
4Lincoln HighwayTrunk road · 14,007vehicles1,041trucks · 7.4%
Road class
Trunk road
Congestion ratio
36.4%
Median trip time
38.2 min
Drivers’ median age
51.5 yrs
Drivers’ average income
$86,439

On its busiest stretch, Lincoln Highway carries 3.4 times the county average; trucks are 7.4% of it, below the county-wide 9.6%.

5Lincoln WayTrunk road · 14,414vehicles1,010trucks · 7.0%
Road class
Trunk road
Congestion ratio
42.3%
Median trip time
37.2 min
Drivers’ median age
50.5 yrs
Drivers’ average income
$82,611

Lincoln Way peaks at 14,414 vehicles a day, 3.5 times the county average; trucks are 7.0% of it, below the county-wide 9.6%.

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

AdamsDepartment 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.
link arrow icon
Data current as of:
Q3 2026

Explore further

TrafficZoom platform

— street-level analytics and custom corridor reports.

Map AI

— demographics, housing and mobility data.

Counties near Adams County

The same traffic breakdown for the areas closest to Adams County, Pennsylvania.

Need segment-level traffic data?

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