Class 3-D refers to a specific classification of vehicles that are designed for off-road use. These vehicles typically have enhanced suspension systems, rugged tires, and powerful engines to navigate challenging terrains. They are often used in activities such as off-roading, rock crawling, and trail driving. In many regions, Class 3-D vehicles are subject to specific regulations regarding their use on public roads. These regulations may include safety standards, emissions requirements, and licensing. Understanding these rules is essential for owners to ensure compliance and safe operation of their vehicles in various environments.