Which are the key means of transportation in Central African Republic? Central African Republic has transport systems like Rail, Air, Pipeline, etc, with Waterways of about 2,800 km (2011) (the primary navigable river is the Ubangi, which joins the River Congo; it was the traditional route for the export of products because it connected with the Congo-Ocean railway at Brazzaville; because of the warfare on both sides of the River Congo from 1997, importers and exporters preferred routes through Cameroon). The Civil aircraft registration country code prefix is TL