**Special vehicles** are divided into two main groups according to their function and use:

1. **Special agricultural vehicles**: These vehicles are specifically designed to work in the field. A common example is the **tractor**, which is used for various agricultural tasks such as plowing or sowing. Agricultural trailers that are towed by other vehicles to transport field products are also included.


2. **Special vehicles for construction and services**: These vehicles are intended to perform specific tasks in construction and other services. For example, **excavators** are used to move earth on construction sites. These vehicles can be self-propelled or towed, depending on their design and function.

The classification of special vehicles into these two groups reflects their main purpose: **agriculture** and **construction/services**, which differentiates them from other types of vehicles that focus on transporting people or goods.