On 1 January 1994, the first two tranches of the Algemene wet bestuursrecht (Awb) came into force. The second tranche deals, among other things, with the administrative procedural law. The primary purpose of the introduction of the general administrative procedural law was to provide legal protection. In addition, the legislator aimed at harmonizing the formal rules of evidence with civil procedural law and at bringing the administrative courts into line with one another. I have examined how the interpretation which the highest administrative courts have given to the rules of evidence in general administrative procedural law relates to the desire for harmonization and how this interpretation is consistent with the principle that legal prote...