This report has been prepared by an internal project group of the WRR. The group consisted of prof.dr. Leigh Hancher as member of the Council, and staff members dr. Willemijn Dicke (project coordinator), mr.dr. Ton van den Brink, dr. Aad Correljé (external advisor), drs. Gera Arts and drs. Niels Feitsma. In addition, ir. Marten Jorritsma contributed to this report for a year during the course of the project.

The analyses in this report are, in part, based on studies conducted by externals at the request of the Council. These studies will be published simultaneously with the report in the series ‘Verkenningen’ no. 19 New Perspectives on Investment in Infrastructures. That publication contains contributions by dr.ir.ing. Rudi Bekkers, dr. Theon van Dijk, drs. Dick van Duijn, prof.mr.dr. Ernst ten Heuvelhof, mr.drs. Hamilcar Knops, prof.dr. Pierre Larouche, mr.dr. Saskia Lavrijssen and prof.dr. Leigh Hancher, prof.dr. William Melody, mr.dr. Jan de Pree, prof.dr.ing. Geert Teisman, and mr. Kirsten Wilkeshuis. Along with this report and the ‘Verkenning’ a webpublication by prof.dr. Leigh Hancher, dr. Willemijn Dicke and ir. Marten Jorritsma will be published.

In preparing this report, the Council also used advice and information provided by people from the Dutch Court of Audit, the ‘Algemene Rekenkamer’. We wish to thank Eric Polman, Cor van Montfort, Jan Wieles and Freek Hoek. Furthermore the project group organized several workshops with policy experts, practitioners and academics, and we did a number of interviews. During the seminars and interviews we spoke with: Nico Baken (kpn), Daniel Tijink (EZ), Robert Haffner (NMA), Wim Holleman (RWS), Luc Kohsiek (RWS), Arend Kroes (GasUnie), Mark Leijsen (Kennisinstituut voor mobiliteit), Frits Otte (EZ), Annetje Ottow (OPTA), Siebe Riedstra (VW), Robert Stil (OPTA), Gert Zijl (NMA), Alexander van Altena (Prorail), Sjoerd Bakker (EnergieNed), Edgar van Boven (KPN), Bernard Dijkhuizen (Zesko BV), Arjen Frentz (VEWIN), Lex Hartman (Tennet), Frank van den Heuvel (Delta), Helma Kip (Essent), Hans van der Meer (NAM), Petra Smeets (GasUnie), Maurice de Valois Turk (KPN), John Groenewegen (Delft University of Technology), Ger Ardon (VROM), Jurrien Prast (VROM), Ton Bestebreur (RWS), Erik van de Brake (Rabobank), Jaap Korf (Rabobank), Wim Dik (Zesko), Paul Disveld (DNB),