Final answer:
Two unique legal issues in the transportation industry are the regulation of mergers and market competition, and environmental impact regulations, as these pertain to sustainable development in the face of oil dependency and electrification of vehicles.
Step-by-step explanation:
At least two legal issues unique to the transportation industry include the regulation of mergers and competitions, such as the case with Greyhound Lines, Inc. and Trailways Transportation System, and the considerations around environmental impacts and sustainability, especially considering the peak in oil production and the shift towards electric vehicles with their own drawbacks.
Mergers in transportation are scrutinized to prevent monopolies and ensure fair competition. Bus companies, when merging, prefer broad market definitions likely to avoid antitrust concerns by showing numerous alternative transportation options available to consumers. In contrast, regulators may prefer a narrow definition to restrict the potential for excessive market power.
Additionally, with rising environmental concerns and the need for sustainable transportation solutions, the industry faces legal challenges regarding emissions, electrification of vehicles, and the development of infrastructure that supports environmentally friendly commuting options.