
Double drop trailers and lowboys are both designed to handle oversized and heavy loads, but they serve different purposes and have distinct features.
Double drop trailers have an extra set of axles and suspension system, which allows them to carry heavier loads and navigate rough terrain with ease.
Lowboys, on the other hand, are designed for transporting extremely heavy and oversized loads, often in the range of 100 to 200 tons.
Their unique design features a flatbed with a low profile, making it ideal for transporting loads that are too large or heavy for standard trailers.
What Is a Double Drop Trailer?
A double drop trailer is commonly used to carry loads up to 12ft in height. It's perfect for transporting tall cargo over standard height limits.
The double drop trailer is a type of lowboy that drops below trailer axles. This design lowers its gravity center.
Double drop trailers have a very short distance from the ground, measuring 24 inches or even lower. This unique feature makes them ideal for transporting tall loads.
The double drop trailer consists of three distinct sections.
Types and Dimensions

Double drop trailers have a typical overall length of 48 feet, making them one of the longer trailers out there.
Their upper deck can range from 6 to 10 feet in length, while the lower deck is usually about 30 feet long.
In terms of width, these trailers are generally around 8.5 feet.
They can carry loads up to 12 feet high, making them suitable for tall loads.
Gooseneck & RGN Dimensions
Gooseneck & RGN Dimensions are important to consider when choosing the right trailer for your needs. The typical length of an RGN trailer can be anywhere from 20’ to 40’.
Gooseneck trailers can also be double drops and lowboys, which affects their dimensions. The height of an RGN trailer can range from 18” to 5’.
The width of an RGN trailer is generally around 8.5’.
Dimensions
RGN trailers can have a length of anywhere from 20’ to 40’, and a height of 18” to 5’.

Their width is generally around 8.5’.
Double drop trailers have an overall length of usually around 48 feet.
Their upper deck is about 6-10 feet long, and the lower deck is often about 30 feet in length.
Double drop trailers can carry loads up to 12’ high.
Their width is usually around 8.5 feet.
The double drop width is the same as other types of trailers, at around 8.5 feet.
Double drop trailers with a removable gooseneck (RGN) have similar dimensions to standard double drops.
The overall length of double drop trailers is typically around 48 feet.
Their width is generally around 8.5 feet.
Double drop trailers are around 8.5 feet wide, regardless of design.
In terms of width, double drop trailers are generally around 8.5 feet.
Understanding Types
Types can be classified into two main categories: nominal and ordinal. Nominal types are used to identify unique labels or categories, such as colors or countries.
Ordinal types, on the other hand, represent a sequence or ranking, like numbers or letters. In the context of a survey, for example, ordinal types might be used to measure satisfaction levels.

Nominal types can have any number of categories, and the values don't have a natural order. In a dataset of favorite foods, for instance, each food item is a unique label.
Ordinal types, by definition, have a specific order or ranking. In a list of exam scores, for example, the scores are ranked from lowest to highest.
The distinction between nominal and ordinal types is important because it affects how data is analyzed and interpreted.
Understanding Double Drop Trailers
A double drop trailer is essentially a lowboy trailer with an additional drop in the middle, which allows for even more flexibility in terms of the types and sizes of loads that can be transported.
This design allows for a more even distribution of weight, making it easier to transport heavy loads over long distances.
Double drop trailers are commonly used in industries such as construction and mining, where oversized or heavy equipment needs to be transported regularly.
They can also be used to transport oversized loads that require a lower clearance than a standard lowboy trailer can provide.
Double drop trailers typically have a maximum gross weight rating of 80,000 pounds or more, making them suitable for heavy-duty applications.
A fresh viewpoint: Lowboy Semi
Key Features and Advantages

Double drop trailers are designed to provide increased vertical clearance, allowing for the transportation of taller loads without exceeding height restrictions on roads. This is particularly useful for industries that require the movement of oversized equipment.
One of the key benefits of double drop trailers is their ease of loading and unloading, thanks to their higher deck. This makes it simpler to get equipment on and off the trailer.
In contrast, lowboy trailers are optimized for maximum load capacity and stability. They're designed to handle extremely heavy and oversized loads that other trailers can't accommodate.
Lowboy trailers also offer superior stability due to their ultra-low deck height, which provides a lower center of gravity and enhances stability during transit.
Here's a comparison of the two trailers:
Double drop trailers are generally more affordable than lowboy trailers, offering a balance between capacity and cost. However, lowboy trailers are designed for specialized industries requiring the transportation of large industrial machinery.
Cost and Maintenance

Double drop trailers have lower maintenance and operational costs compared to lowboy trailers, making them a more cost-efficient option over time. This is a significant advantage for businesses that rely on these trailers for their operations.
Lowboy trailers, on the other hand, have higher maintenance costs due to their complex axle configurations and specialized components. However, their superior load capacities often justify these additional costs.
In terms of depreciation and resale value, double drop trailers offer steady depreciation rates with good resale value, especially if maintained properly. This makes them a more stable investment for those who plan to sell or trade-in their trailers in the future.
Here's a comparison of the operating costs of double drop and lowboy trailers:
Cost Analysis
Investing in the right trailer involves evaluating both upfront costs and long-term value. This includes considering the initial investment required to purchase the trailer, as well as the ongoing operating and maintenance costs.

Double Drop Trailers are typically more affordable, making them accessible for businesses with moderate hauling needs. Their lower maintenance and operational costs contribute to better cost-efficiency over time.
Lowboy Trailers, on the other hand, have higher initial costs due to their specialized design and construction. However, they are justified by their superior load capacities.
Here's a comparison of the upfront costs of Double Drop and Lowboy Trailers:
Lowboy Trailers have higher maintenance costs due to their complex axle configurations and specialized components. However, their superior load capacities make them a worthwhile investment for businesses with extensive heavy hauling requirements.
Maintenance and Durability
Investing in a trailer requires careful consideration of its maintenance and durability. Double drop and lowboy trailers are designed with longevity in mind, using high-quality materials and advanced engineering techniques.
CarMax Vehicle designs both double drop and lowboy trailers with durability in mind, using high-quality materials and advanced engineering techniques. This attention to detail can lead to a longer lifespan for your trailer.

Proper maintenance is crucial for extending the life of your trailer. Double drop trailers, in particular, offer steady depreciation rates with good resale value if maintained properly.
Here are some key factors to consider when evaluating the maintenance needs of your trailer:
- Double drop trailers: steady depreciation rates with good resale value if maintained properly
- Lowboy trailers: maintain higher resale values due to their specialized nature and continued demand in heavy industries
Safety and Customization
Safety is paramount in heavy hauling, and both double drop and lowboy trailers offer features that enhance operational safety.
Customization options are also available for lowboy trailers, including a detachable gooseneck that allows for flexible load configurations and easier attachment of different types of equipment.
Advanced brake systems ensure optimal control and safety for heavy-duty hauling in lowboy trailers.
Double drop trailers also prioritize safety with features like enhanced stability, which minimizes the risk of load sway and rollover during transit.
The lower deck of double drop trailers provides a more stable platform for heavy loads, reducing the risk of accidents on the road.
Multiple anchoring points in double drop trailers ensure loads are properly secured, reducing the risk of shifting or falling during transport.
Here are some key safety and customization features of both trailer types:
- Double Drop Trailer: Enhanced stability, secure tie-down points, and reflective markings.
- Lowboy Trailer: Detachable gooseneck, extended decking options, and advanced brake systems.
Customization and Flexibility

Customization and flexibility are key to meeting specific hauling needs. At CarMax Vehicle, we recognize that each hauling need is unique and can be customized to meet specific requirements.
Custom features for lowboy trailers allow for flexible load configurations and easier attachment of different types of equipment. This includes a detachable gooseneck that makes it easy to attach and detach equipment as needed.
Extended decking options are available to accommodate exceptionally long or wide loads. This is especially useful for hauling oversized or irregularly shaped cargo.
Advanced brake systems are a crucial safety feature for heavy-duty hauling. Ensuring optimal control and safety for heavy-duty hauling is essential, and these advanced systems help achieve that.
Lowboy trailers can be customized to meet specific requirements, making them a versatile option for hauling heavy loads.
Safety Features
Safety is paramount in heavy hauling, and both trailer types offer features that enhance operational safety.
The lower deck in double drop trailers minimizes the risk of load sway and rollover during transit.
Multiple anchoring points in double drop trailers ensure loads are properly secured.
Increased visibility to other road users is provided by the reflective markings on double drop trailers, enhancing safety during night operations.
Double drop trailers offer several safety features, including enhanced stability, secure tie-down points, and reflective markings.
Lowboy and Step Deck Flatbed

A Lowboy and Step Deck Flatbed are specialized trailers designed to handle unique cargo needs. The Lowboy, for instance, features a low deck height to accommodate extremely heavy and oversized equipment.
The Step Deck, on the other hand, is designed for tall cargo that exceeds the height limitations of flatbed trailers, with a two-level deck. This allows for easy loading and unloading of oversized loads.
Here's a brief comparison of these two trailers:
Both trailers are essential for the transportation industry, and understanding their unique features can help you choose the right trailer for your specific needs.
Lowboy
Lowboy trailers are designed to transport oversized and heavy loads, but they typically have only one drop in the deck height.
Their deck design is a key characteristic that sets them apart from other trailers. Lowboy trailers usually feature a fixed gooseneck, which can make loading and unloading cargo more difficult.
Here are some key differences between lowboy and double drop trailers:
- Deck Design: Lowboy trailers have a single drop, while double drop trailers have two drops, leading to a lower cargo bed.
- Gooseneck: Lowboy trailers typically feature a fixed gooseneck, while double drop trailers can have removable gooseneck (RGN) or hydraulic gooseneck configurations.
Lowboy trailers are essential in the transportation industry for their ability to carry oversized and heavy loads, but they may not offer the same level of flexibility and safety as double drop trailers.
What Is a Step Deck Flatbed?

A Step Deck Flatbed is designed for tall cargo that exceeds the height limitations of standard flatbed trailers. It features a two-level deck, making it perfect for loads that are too high for a standard flatbed.
The two-level deck of a Step Deck Flatbed allows for easy loading and unloading of tall cargo, making it a convenient option for haulers.
Here's a comparison of the different types of flatbed trailers:
The Step Deck Flatbed is a versatile option for transporting a variety of loads, from construction equipment to industrial machinery.
Frequently Asked Questions
What is another name for a double drop trailer?
Another name for a double drop trailer is a lowboy. It's a specialized trailer used for transporting oversized loads.
Is a double drop the same as an RGN?
A Double Drop and an RGN (Removable Gooseneck) are often used interchangeably, but not all Double Drops have a removable gooseneck. While similar, they are not exactly synonymous, with some Double Drops having a fixed gooseneck instead.
What is one danger associated with double drop trailers?
Double drop trailers have a larger blind spot due to their length, increasing the risk of accidents. This can lead to more severe consequences in the event of a collision or rollover.
Sources
- https://www.freightrun.com/blog/post/what-is-rgn-double-drop-gooseneck-lowboy-trailers
- https://semitrailer.by/double-drop-trailer-vs-lowboy-a-comprehensive-comparison-by-carmax-vehicle/
- https://pinnacletruck.com/what-is-a-double-drop-trailer-and-when-you-should-use-one/
- https://trisontarps.com/blog/what-is-a-double-drop-trailer/
- https://www.veritread.com/blog/step-decks-flatbeds-and-lowboys-compare-specialized-trucking-trailers/
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