What is the required number of tail lights on a self-propelled unit of farm equipment?

In Texas, a self-propelled unit of farm equipment is required to have at least one tail light. This is important for visibility and safety, especially when operating on public roads. The regulation aims to ensure that other drivers can see the equipment from behind, particularly in low-light conditions. A single tail light fulfills this requirement while also keeping compliance simple for operators of such equipment.

Having fewer than one tail light or none at all would not meet safety standards and could pose risks on the road. Options implying a need for two or three tail lights would exceed the minimum requirement, which is not necessary for the classification of this type of vehicle as specified in the regulations. Therefore, the option that states one tail light aligns perfectly with legal requirements and safety protocols.