Finland has a superb network of domestic train, bus and air connections. Over 20 cities are linked by daily air services, as far north as Ivalo on the 67th parallel. Buses are the principal carriers of domestic and visitor traffic to more remote parts, although trains carry passengers efficiently along intercity routes right up to the Arctic Circle. The highway and freeway network is good between city centres, although you can encounter unsurfaced dirt and beaten tracks in the forests. No international licence is needed to drive in Finland, but you should carry your own licence when driving. Traffic keeps to the right and you should always drive with your headlights on. In most towns bicycles can be hired and are a recommended mode of transport during the summer. Lake and river ferries operate over the summer period, and come in handy if you’re walking or cycling around the country.