During what condition is it acceptable to operate farm vehicles on highways?

Operating farm vehicles on highways is acceptable during conditions where visibility is high and the overall circumstances are safe. This ensures that both the operator and other road users can see and react appropriately to the presence of a slower-moving vehicle. High visibility days, such as clear weather without fog, rain, or snow, allow for safer travel as all drivers can observe each other's movements more easily.

In addition, safe conditions encompass several factors, including road surface conditions (such as being dry and clear of debris), the speed of other traffic, and the farmer’s ability to navigate appropriately without putting themselves or others in danger. In such scenarios, agricultural vehicles can share the road responsibly.

Operating farm vehicles at night without lights, during busy rush hours, or only in rural areas is not prudent and poses safety risks. Vehicles lacking proper illumination at night would limit visibility, rush hour can create hazardous conditions due to heavy traffic, and restricting operation solely to rural areas could prevent necessary navigation to fields or markets.