Final answer:
According to state law, animal-drawn vehicles and farm tractors must have adequate lighting and reflective devices when operated on highways at night for safety and visibility reasons.
Step-by-step explanation:
The question pertains to state law specifically about traffic safety regulations for non-motorized vehicles at night. According to state law, animal-drawn vehicles and any farm tractor when operated on a highway at night are generally required to have adequate lighting and reflective devices. This is to ensure visibility and safety for both the operator of the vehicle and other road users. These lighting requirements usually include front and rear lights, as well as reflective markings. It is vital for the adhere to these laws as they are designed to prevent accidents and improve road safety during the night when visibility is significantly reduced.