With the rapid growth of companies like Lyft and Uber, ride-sharing services have been among the most controversial business models in recent history. App-based ride-sharing services have been both praised for their successful implementation and criticized for their uncertain position in transportation regulation. In several states, ride-sharing companies have met significant legal opposition, frequently led by competitors such as the taxi industry. While these legal disputes have begun to be resolved in favor of allowing ride-sharing services to continue, the state of the industry remains uncertain, and new legal challenges continue to arise.