Yellow Transportation HHI has been offering the most reliable, affordable, and professional taxi service in the Hilton Head, Bluffton, and surrounding Lowcountry area since 1989. We offer a full scale of transportation services that are perfect for any occasion! Our main taxi service is available 24/7 for immediate pickup or an advanced reservation. The airport shuttle services to Hilton Head, Savannah, & Charleston airports are always on time! Going Greyhound instead? Well get you there! Have a party, wedding, or other gathering? Check out our event and large group transportation services! Need medical transport? Our high tech and comfortable handicap and paratransit NEMT service is 2nd to none! Corporate accounts also available!