Fundamentele overwegingen omtrent visuele en verlichtingskundige aspecten van de verkeersveiligheid.

For the set-up of a research into the contribution which traffic lighting can be for traffic safety a number of notes is made. These notes are meant for the practical met up and execution of such a research; therefore they are more or less pragmatic. Since a fundamental justification for the set-up of such research is a must, the present conceptual study considers the problems behind the more pragmatic research set-up in more detail.