The article discusses how design concepts are crucial in transportation design. Researchers studied how these concepts are developed and used in the design process. They found that holistic design concepts are important for successful projects, but functional and formal concepts are also common. Different methods of generating design concepts were identified, with some being more suitable for transportation design and others for industrial design. Three main types of designers were identified: automobile, design, and story-focused. The researchers recommend using a combination of different methods and designer types for effective design concept development in transportation design.