This paper introduces a project designed to develop a method for a future systematic audit of the existing network of state roads concerning possible measures for improving traffic safety. Since 1997, Denmark has had a model for systematic prevention of road accidents, as described in the Danish manual of Road Safety Audit (RSA). This model describes a procedure by which all highway authorities by way of a road safety audit are able to prevent road accidents on new road projects or on existing roads undergoing major alterations. Many highway authorities use Road Safety Audit when constructing new roads. There is, however, no single detailed description of how a road safety audit is conducted on existing roads. This paper describes a project designed to develop a method for a future systematic audit of the existing network.