Why Truck Accidents Are Increasing in the Lehigh Valley (And What Drivers Don’t See)

The Rise of Truck Traffic in the Lehigh Valley

If you’ve driven through Allentown, Bethlehem, Easton or surrounding areas recently, you’ve likely noticed a major shift: tractor-trailers are now everywhere.

The Lehigh Valley has become one of the fastest-growing warehouse and logistics hubs in the Northeast. That growth has brought a dramatic increase in truck traffic across major roads like Route 22, I-78, and Airport Road.  With an increase in truck traffic has come an increase in truck accident claims. A recent example is the continued expansion of large-scale warehouse facilities along the Route 100 corridor in Upper Macungie Township, where new distribution centers have brought a steady increase in daily tractor-trailer traffic to roads that were never designed for that volume.

In some areas, truck volume has more than doubled over the last decade.  But the increase in accidents is not just about more trucks. It is also about how those trucks interact with roads that were not originally designed for this level of semi-truck traffic.

Why Tractor-Trailers Don’t Turn Like Cars

One of the most common causes of truck accidents in the Lehigh Valley happens at intersections, and often at low speeds.

Unlike passenger vehicles, tractor-trailers do not follow a tight turning path. When a truck turns:

• The trailer cuts inward toward the curb
• The cab swings outward into adjacent lanes

This is known as offtracking, and it’s unavoidable. In many situations, a truck needs the space of two lanes to safely complete a turn.

To nearby drivers, this can look like an opening to pass. In reality, that space disappears as the trailer moves through the turn, leading to serious side-impact collisions.  Side-swipe crashes often occur during these wide turns, especially along corridors like Schoenersville Road in Bethlehem, where trucks navigating tight intersections may temporarily occupy adjacent lanes as the trailer tracks inward.

Where Truck Accidents Are Happening Most Often

Truck accidents in the Lehigh Valley tend to cluster in areas where heavy freight traffic meets older road design.

Some of the most common locations include:

• Airport Road (Hanover Township corridor) – now a major warehouse access route
• Route 100 & Tilghman Street – a central freight corridor
• PA 329 (Nor-Bath Boulevard) – known for difficult truck turning geometry

These are not random crash sites. They are predictable conflict zones created by increased truck volume and limited turning space.

For a deeper breakdown of specific locations, see our guide to dangerous truck accident intersections in the Lehigh Valley.

Why Drivers Misjudge Truck Turns

Most drivers rely on experience with other cars when making decisions on the road.

When a truck swings wide before a turn, it can create the illusion of space. Drivers may believe:

• the truck is drifting
• there is room to pass
• the lane is open

But as the trailer tracks inward, that perceived space disappears instantly.

This type of driver misperception is a major contributor to truck accidents throughout the region.  ​​Drivers traveling along MacArthur Road in Whitehall often misjudge how quickly traffic conditions change near busy retail and warehouse access points, leading to delayed braking or sudden lane changes that can create dangerous conflicts with nearby trucks.

Who Is at Fault in a Lehigh Valley Truck Accident

Truck accident cases are often more complex than typical car accidents.  Truck drivers are held to a higher standard of care under both federal and Pennsylvania law, including strict safety rules governing training, hours of service, and vehicle operation (see 49 C.F.R. § 392.2, requiring compliance with local traffic laws). On busy freight corridors like Freemansburg Avenue in Bethlehem Township, where trucks frequently interact with local traffic, even small violations of these duties can become critical factors in determining liability after a crash.

Depending on the circumstances, liability may involve:

• The truck driver
• The trucking company
• Maintenance providers
• Cargo loaders or warehouse operators

Key evidence may include:

• onboard electronic data
• delivery schedules
• route planning decisions

Because multiple parties may be involved, these cases require a detailed investigation.

If you need help, learn more about your rights by speaking with a Lehigh Valley truck accident lawyer.

What To Do After a Truck Accident in Pennsylvania

After a truck accident:

1. Seek medical attention immediately
2. Document the scene if possible
3. Avoid giving recorded statements to insurers
4. Preserve any evidence (photos, witness info)

Truck accident claims move quickly, and early decisions can affect your case. If you’ve been injured in an accident with a tractor trailer truck in the Lehigh Valley, understanding your legal rights is critical.

Frequently Asked Questions About Truck Accidents in the Lehigh Valley

Why are truck accidents increasing in the Lehigh Valley?

Truck accidents are increasing largely due to rapid warehouse and logistics development across Lehigh and Northampton Counties, which has significantly increased daily tractor-trailer traffic. Many local roads, especially corridors feeding Route 22 and Route 100, were designed decades ago for lighter traffic and smaller vehicles. As a result, intersections now handle frequent large-truck turning movements they were never built to accommodate, creating more opportunities for conflict between trucks and passenger vehicles.

How do I avoid being hit by a turning truck?

The most important rule is to never try to pass a turning truck, especially on the right side. When a tractor-trailer prepares to turn, it often swings wide first, which can make it look like there is space to pass, but that space disappears as the trailer cuts inward. Watch the truck’s front wheels and positioning; if the cab moves away from the curb or straddles lanes, it is setting up for a wide turn. Keep your distance, stay out of blind spots, and assume the truck may need more than one lane to complete the turn safely.

Why do trucks swing wide when turning?

Trucks swing wide because of a physical limitation called offtracking, where the trailer’s rear wheels follow a tighter path than the cab. To prevent the trailer from striking the curb or roadside objects, the driver must move the front of the truck outward into adjacent lanes before completing the turn. This often requires the space of more than one lane, even at low speeds, which can surprise nearby drivers who are not familiar with how large trucks maneuver.

Where do most truck accidents happen locally?

Aside highway truck crashes on Route 22 and I-78, truck accidents are most common in areas with heavy warehouse traffic and frequent turning movements, particularly along corridors like Airport Road, Route 100, and parts of PA 329. Intersections in these areas often combine high truck volume with tight turning space and older roadway design, increasing the likelihood of conflicts. Crashes frequently occur at or near intersections where trucks must make wide turns or navigate complex traffic patterns.

Who can be held responsible in a truck accident?

Liability in a truck accident can extend beyond the driver and often includes multiple parties. Depending on the circumstances, responsible parties may include the trucking company, maintenance providers, cargo loaders, or even third-party contractors involved in routing or scheduling. These cases typically require reviewing driver logs, vehicle data, and company policies to determine whether safety regulations were followed and where negligence occurred.

About The Author

Frank Santini

Frank Santini, Esq., is a highly accomplished personal injury attorney and the founder of Santini Personal Injury & Car Accident Law, specializing in personal injury law. A summa cum laude graduate of Stetson University College of Law, Frank is licensed in Florida and New Jersey and has earned recognition as a Rising Star" by Super Lawyers and high ratings from Martindale-Hubbell. Education: Graduated cum laude from Muhlenberg College in Allentown, PA Graduated summa cum laude from Stetson University College of Law Professional Associations: Member of The Florida Bar and the New Jersey Bar. Experience: Founder of Santini Personal Injury & Car Accident Law, representing personal injury clients with dedication and expertise.

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