Travel agencies offer daily city tours, but services suffer from frequent disruption by weather conditions. There is also a weekly service from San Salvador to Abay. Services are often unreliable, however, and whole routes may be abandoned for months at a time. River cruises to the main tourist attractions and throughout the Chaco are available. Traffic drives on the right.
Roads serving the main centres are in good condition.
However, unsurfaced roads may be closed in bad weather. A highway links Asunci n with Iguaz Falls, a drive of up to six hours. Often the best and cheapest method of transport within Paraguay. For longer distances, advance booking may be necessary. There are express links to major centres.