Improving the relationship between main contractors and sub-contractors in Indonesian transportation infrastructure projects

This study adopted a mixed methodology approach to investigate the way that relationship management has been implemented in Indonesian transportation infrastructure projects. The research examines the relationships between main contractors and subcontractors during project execution phases, and finds that there is an interplay between project culture and relationship quality in improving project performance. The research recommends that it is essential for projects to instill a positive project culture into the downstream supply chain (subcontractors and suppliers), so that a more harmonious working atmosphere can be established in these organisations, which in turn can support the achievement of project performance