Praktijktest van de DV-meter : gebruiksvriendelijkheid van een computerprogramma voor de analyse van DV-karakteristieken van een wegennet.

Practical test of the Sustainably-Safe meter; User-friendliness of a computer program for analysing S-S features of a road network. With the implementation of the Start-up programme Sustainably-Safe in 1997, the categorizing of the Netherlands road network also began. In order to introduce a sustainably safe traffic and transport system in an unambiguous way, a CROW working group made a list of requirements, and this was published in CROW report number 116. In spite of these requirements, the road network will, in practice, never be in complete agreement with the features that Sustainably-Safe aims at. When switching over from plan to implementation, S-S features will disappear during the various phases of the planning process. By using the S-S meter, it can be examined to what extent infrastructural plans and projects meet the functional Sustainably-Safe requirements. Moreover, elements that are not Sustainably-Safe, can already in the planning phase of a project be detected and altered to meet the requirements. It is important to thoroughly test the S-S meter (a computer program) before it can be used by others than at SWOV. In this study, the user-friendliness of the S-S meter was tested in two municipalities. In both of these a S-S meter was installed and the users were asked to communicate their experiences of the S-S meter to us via a questionnaire. A judgement was requested about the extent of the user-friendliness for the following points: - the installation and starting up of the program; - feeding in the data; - extracting the data; - the data collection; - the general, expected benefit for the user. The results can be called encouraging. In spite of a number of problems with starting up the program, in general the user-friendliness of the S-S meter was judged to be good, and is of a sufficient level to be used further in the programme. The future applications lie mainly in improving the definitions of a number of features. In addition, the extraction of the data must still be extended, and a way must be found to make the S-S meter fit easily onto other programs which contain road features.