Lock-in, the escalating commitment of decision makers to an ineffective course of action, has the potential to explain the large cost overruns in large-scale transportation infrastructure projects. Lock-in can occur both at the decision-making level (before the decision to build) and at the...

This article examines innovation in megaprojects and the way in which project complexity plays a role in innovation. Megaprojects are experiencing increasing levels of innovation as a means to deal with complexity and to improve the delivery of megaprojects. So far the relation between...