Most transport in Tanzania is by road, with road transport constituting over 75 per cent of the country's freight traffic and 80 per cent of its passenger traffic. The  road system is in generally poor condition. Tanzania has two railway companies: TAZARA, which provides service between Dar es Salaam and Kapiri Mposhi (in a copper-mining district in Zambia), and Tanzania Railways Limited, which connects Dar es Salaam with central and northern Tanzania. Rail travel in Tanzania often entails slow journeys with frequent cancellations or delays, and the railways have a deficient safety record.