Transportation in the Philippines is facilitated by road, air, rail and waterways. As of December 2018, there are of roads in the Philippines, with only of roads paved. The Strong Republic Nautical Highway (SRNH), an integrated set of highway segments and ferry routes covering 17 cities was established in 2003. The Pan-Philippine Highway connects the islands of Luzon, Samar, Leyte, and Mindanao, forming the backbone of land-based transportation in the country. Roads are the dominant form of transport, carrying 98% of people and 58% of cargo. A network of expressways extends from the capital to other areas of Luzon. The Cebu–Cordova Link Expressway in Cebu will be finished by 2021. Traffic is a significant issue facing the country, especially within Manila and on arterial roads connecting to the capital.