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Traffic heat map of Franklin County, Pennsylvania: 703 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 81

Franklin County, Pennsylvania Traffic Counts

Traffic analytics for Franklin County, Pennsylvania, calculated from real-world mobile and sensor networks on 12,315 road segments (703 road miles, about 301 ft each). Its highways rank among the top 5 counties in Pennsylvania for trucks per day. 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 Franklin County, Pennsylvania

Traffic

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

vehicles per day4,212
Trucks

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

15.8%
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.

13.5%
Drivers’ average age

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

49.1 yrs
Drivers’ average income

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

$80,356

Our data shows 4,212 vehicles per day on the average road in Franklin County, Pennsylvania, and 3,495,748 vehicle-miles traveled per day (≈1.3 billion per year) across its 703 miles of monitored roads. Trucks are 15.8% of traffic, more than the 10.6% across Pennsylvania.

Shorter trips than 88% of counties in Pennsylvania

Franklin sees 25% lower average daily traffic volume than the state average (4,212 vehicles per day against 5,617), suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. Across the whole network, that travel is about 1.6% of Pennsylvania's statewide total. 65% of counties in Pennsylvania see less traffic than Franklin's 4,212 vehicles per day.

The average trip takes 31.5 minutes, 9% lower than the state level. 88% of counties in Pennsylvania have a longer average travel time than Franklin's 31.5 minutes.

The congestion ratio of 13.5% is 18% 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 Franklin County, Pennsylvania

Trafficvehicles per day12,494
Trucks23.5%
Average travel time41.1 min
Congestion ratio29.6%
Drivers’ average age49.5 yrs
Drivers’ average income$80,536

Travel in Franklin County, Pennsylvania splits roughly evenly, with about half of it (54% of vehicle-miles) on highways. The average highway carries 12,494 vehicles per day, 249% more than the average non-highway road in the same area, which carries 3,576 vehicles per day.

Yet highways are only 17% of the road network, 119 miles in 878 segments, so each mile of them is 3.2 times as busy as the average road mile.

75% of counties in Pennsylvania move less traffic on their highways.

More highway trucks than 94% of counties in Pennsylvania

At 23.5%, highway truck share is 49% higher than the state average. Highways here lean toward freight, so highway access is a real asset for logistics operators.

Franklin's highway truck share (23.5%) is higher than 76% of counties in Pennsylvania. Franklin's highway truck count is higher than 94% of counties in Pennsylvania, at roughly 2,932 trucks per day.

non-highway traffic icon

Non-highway Traffic in Franklin County, Pennsylvania

Trafficvehicles per day3,576
Trucks6.9%
Average travel time30.8 min
Congestion ratio12.3%
Drivers’ average age48.9 yrs
Drivers’ average income$80,247

Travel in Franklin County, Pennsylvania splits roughly evenly, with about half of it (46% of vehicle-miles) on local roads. On the average non-highway road, that comes to 3,576 vehicles per day.

Local roads make up 83% of the monitored road miles (584 miles in 11,437 segments) but carry less than their share of travel: 1,612,910 vehicle-miles traveled per day (≈589 million per year). The truck share on non-highway roads is 6.9%.

Drivers from higher-income areas than 71% of counties in Pennsylvania

Compared to highways, non-highway routes see 71% fewer trucks by share.

At 22% lower than the state level, the non-highway congestion ratio of 12.3% signals easier movement on local roads.

Franklin's average driver income is higher than 71% of counties in Pennsylvania. Franklin's median driver age is lower than 71% of counties in Pennsylvania.

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 6:00 PM, with volumes reaching approximately 65% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 18% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +8% versus the annual average.
Lowest month:
January is the quietest month, with volumes -16% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Franklin County, Pennsylvania, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +8% in high season.

Franklin County vs. Pennsylvania Traffic Comparison

Of the four measures, highway truck share differs most: Franklin County runs 49% above the Pennsylvania average. Its truck share is also 49% above.

MetricFranklin CountyPennsylvania averageDifference
Traffic4,2125,617-25.0%
Truck % (Total Traffic)15.8%10.6%+48.7%
Truck % (Highway)23.5%15.8%+49.0%
Avg. Travel Time31.5 min34.6 min-8.9%

How Franklin County compares

Franklin County against nearby counties

Franklin 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 second busiest roads of the five. The same kind of road, simply more of it: traffic per road matches the areas around it while the network itself is larger.

Franklin 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
Franklin County4,21215.8%3,495,74831.5 min13.5%
Cumberland County, Pennsylvania6,23517.2%6,240,72734.3 min17.0%
Fulton County, Pennsylvania1,72025.3%1,019,69734.6 min8.2%
Adams County, Pennsylvania4,1479.6%2,092,30434.8 min13.3%
Huntingdon County, Pennsylvania2,63910.4%808,18930.9 min9.6%
Pennsylvania average5,61710.6%N/A34.6 min16.5%

Franklin County ranked within Pennsylvania

Franklin County sits in the top quarter of the Pennsylvania field on highway truck volume, at #5 of 64.

Franklin County ranked among 67 county-level areas in Pennsylvania (1 = highest); measures without data in every county rank a smaller field, down to 64.
MeasureFranklin CountyPennsylvania rank
Traffic volume (AADT)4,212#24 of 67
Highway vehicle-miles per day1,882,837#17 of 64
Truck share on highways23.5%#16 of 64
Highway trucks per day2,932#5 of 64
Average travel time31.5 min#59 of 67
Average driver income$80,356#20 of 67
Average driver age49.1 yrs#48 of 67

Franklin County ranks #5 of 64 on highway truck volume but #59 of 67 on average travel time - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Franklin County, Pennsylvania

On their busiest stretches, the three busiest roads in Franklin County carry 29,459 vehicles a day on average, 7.0 times the typical road in the county (4,212).

I 81 leads with 41,768 vehicles a day, 10,200 of them trucks (24.4%). That is 76% more than the next road, Tuscarora Mountain Tunnel (23,708). It tops the truck ranking too, with the most trucks.

Tuscarora Mountain Tunnel carries longer journeys than most roads here, with a median trip of 81.7 minutes against 31.5 county-wide.

Freight stands out on Blue Mountain Tunnel and Pennsylvania Turnpike: trucks are 36.2% and 34.0% of the traffic there, against 15.8% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 81Motorway · 41,768vehicles10,200trucks · 24.4%
Road class
Motorway
Congestion ratio
35.2%
Median trip time
46.3 min
Drivers’ median age
48.5 yrs
Drivers’ average income
$82,640

Trucks make up 24.4% of I 81's traffic, against 15.8% across the county, so freight weighs heavily here.

2Tuscarora Mountain TunnelMotorway · 23,708vehicles7,492trucks · 31.6%
Road class
Motorway
Congestion ratio
28.3%
Median trip time
81.7 min
Drivers’ median age
50.9 yrs
Drivers’ average income
$65,411

Tuscarora Mountain Tunnel leans on freight: 7,492 trucks a day, 31.6% of its traffic against 15.8% county-wide.

3Pennsylvania TurnpikeMotorway · 22,900vehicles7,785trucks · 34.0%
Road class
Motorway
Congestion ratio
26.1%
Median trip time
80.3 min
Drivers’ median age
51.5 yrs
Drivers’ average income
$68,332

Drivers on Pennsylvania Turnpike are on long journeys, a median 80.3 minutes against 31.5 county-wide: a through route more than a local street.

4Lincoln WayTrunk road · 15,872vehicles968trucks · 6.1%
Road class
Trunk road
Congestion ratio
35.4%
Median trip time
34.0 min
Drivers’ median age
49.9 yrs
Drivers’ average income
$79,951

Delays build on Lincoln Way: its congestion ratio of 35% over free-flow time is well above the county's 14%.

5Baltimore StreetPrimary road · 14,571vehicles803trucks · 5.5%
Road class
Primary road
Congestion ratio
46.5%
Median trip time
27.7 min
Drivers’ median age
49.3 yrs
Drivers’ average income
$88,889

Travel on Baltimore Street's busiest stretch runs 47% over free-flow time, against 14% across the county, so expect slower peak hours.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 81Motorway · #1 by traffic41,768vehicles10,200trucks · 24.4%
2Pennsylvania TurnpikeMotorway · #3 by traffic22,900vehicles7,785trucks · 34.0%
3Tuscarora Mountain TunnelMotorway · #2 by traffic23,708vehicles7,492trucks · 31.6%
4Blue Mountain TunnelMotorway · 10,247vehicles3,708trucks · 36.2%
Road class
Motorway
Congestion ratio
24.4%
Median trip time
77.7 min
Drivers’ median age
51.5 yrs
Drivers’ average income
$71,804

Blue Mountain Tunnel carries through traffic: the median trip using it lasts 77.7 minutes, against 31.5 for the county.

5Lincoln WayTrunk road · #4 by traffic15,872vehicles968trucks · 6.1%
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

FranklinDepartment 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 Franklin County

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

Need segment-level traffic data?

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