What are three examples of transportation-based cities?

Three examples of transportation-based cities are:

1. Chicago, Illinois - Known for its extensive rail network and as a major hub for freight and passenger transport, Chicago plays a crucial role in connecting various regions of the U.S.
2. Hamburg, Germany - With one of the largest ports in Europe, Hamburg serves as a key logistics and shipping center, facilitating international trade and transportation.
3. Dubai, UAE - Renowned for its modern infrastructure, including a vast network of roads, an international airport, and a state-of-the-art metro system, Dubai is a pivotal transit point for global travelers and goods.