On what type of recreational vehicle is a DOT propane cylinder typically found?

A DOT propane cylinder is typically found on towables or trailers. This is primarily due to the design and function of these types of recreational vehicles, which often require portable propane systems for appliances like stoves, refrigerators, and heating units. Towable RVs, such as travel trailers and fifth wheels, rely on external propane systems that can be easily connected and disconnected as needed, making DOT cylinders the ideal choice for fuel storage.

In contrast, while motorhomes and Class C vehicles might use built-in propane tanks, the DOT cylinders are generally more suited for towable designs. Toy haulers, which are a specific type of towable, may also use DOT cylinders but are typically categorized separately due to their unique features and design focuses. Thus, towables or trailers represent the most common application for DOT propane cylinders, emphasizing the need for portability and ease of use in these RV types.