On a few occasions, portions of the Highway have been closed by villagers protesting grievances against or seeking compensation from the Government. Nearly all users of the coastal shipping service complained of high charges and lack of competition in a recent independent survey. Port Moresby is the focal point for the National Capital District and Central Province. Lae serves Morobe province and the Highlands. Other important ports are located at Madang, Wewak and Rabaul.
Most firms rely on stand-by generators and surge protectors.
Water supply, particularly in Port Moresby, is also erratic and many companies rely on their own wells or trucked water for all or part of their supply. Although telephone service is sophisticated and fairly reliable, costs are high, especially for international calls. Cellular telephone service was introduced in Port Moresby, Lae and Mount Hagen in 1996. Five local Internet Service Providers began offering service in May 1997. Expansion of the telecommunications network and rural electrification represent long-term trade opportunities for exporters of necessary technology and equipment.