Väg-ra kostnadsöverskridning i trafikinfrastruktur
During the 21’st century a lot of support has been found by economists that megaprojects all over the world become more expensive than planned. One type of project well known for cost-escalations is traffic infrastructure. The most common theory for this phenomenon is that benefits and costs for these projects suffers from optimism bias, where the former is exaggerated, and the latter is understat