When are drivers allowed to use only parking lights while driving?

Drivers are not permitted to use only parking lights while driving under any circumstances because parking lights are meant solely for stationary vehicles to indicate their presence to other drivers. Using only parking lights while driving can create confusion on the road, as they do not provide adequate visibility for the driver or signal intent to others. Standard headlights should always be used to ensure clear visibility and safety, especially in low-light conditions, inclement weather, or when visibility is compromised. This rule helps maintain safety standards on the road, ensuring that drivers can see and be seen effectively.