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Oahu is the third largest and most populous of the Hawaiian Islands, made up of two dormant volcanoes, with a broad valley between them. Honolulu, the largest city, state capital and main deepwater marine port for the state is located on the southeast coat. An Oahu rent a car is a great way to get around and see all that the island, also known as “The Gathering Place”, has to offer. Look for great deals on Oahu car rentals and save time and money to explore popular destinations like Waikiki, Pearl Harbor, Diamond Head, Hanauma Bay, Kaneohe Bay, Kailua Bay, and the North Shore. The island is served by Honolulu International Airport (HNL), where the majority of visitors arrive. If you fly in here, rentals are available via complementary shuttle by Enterprise, Thrifty, Alamo, Dollar, Budget, National, Hertz, and Avis. Try Enterprise for the best deals, followed by Thrifty and Dollar. Oahu car rentals are also available throughout the island at additional locations offered by many of the same companies at the airport, although usually for lower rates. You must present a valid driver's license and credit card issued in your name at most Oahu rent a car agencies (although some will take a cash deposit depending on a credit check), along with proof of insurance if you decline the vendor's coverage options. The minimum age to drive in Hawaii is 15 years, but most car rental agencies require drivers to be at least 25. Expect to pay about 25% more for gas than the average mainland US prices. Although most main highways are fairly easy to navigate and well maintained, many rental car companies have restricted areas. Plan your route and check with the agency first, to keep from voiding insurance coverage if your rental car breaks down or gets stuck. All roads and street are well marked, and many feature red-capped warrior signs provided by the Hawaii Visitors Bureau that mark major visitor attractions and scenic spots. Always check the weather before driving long distances as sudden rainstorms can arise without warning. Follow Hawaii’s strict seatbelt laws and carry a cell-phone and emergency items with you in case of a breakdown or accident on a remote part of the island. Jaywalking is common on the island, so watch out for pedestrians, especially in congested areas.