Taxis are among the most highly regulated local businesses. Cities not only license drivers, vehicles and taxi companies, but often control the market by create commoditized medallians or local franchises that restrict the entry of new taxi companies into their cities. Accordingly, anyone involved in the taxi business can expect some serious paperwork, fees and licensing processes.
Being one of California and the nation’s major cities means San Diego is home to many businesses. However, the city’s licensing systems are fairly decentralized requiring business owners to apply to numerous departments including the city treasurer, planning and development and the police. Additionally, licenses from San Diego County, the state and sometimes the federal government are required in certain industries. San Diego's major industries include defense, international trade, shipping, tourism, manufacturing, research and real estate. The city's close proximity to Mexico and large natural harbor make it a gateway to commerce with Asia and Latin America.