Last week a joint DVN-GTB Forum was held at Turin, Italy. The rubric was Traffic Safety Through Lighting System Innovation and Harmonised Technical Requirements, and the goal was to aid GTB in developing their 2025 vision and associated work programme. In the Morning session Prof. Dr -Ing. Tran Quoc Khanh, Technische Universität Darmstadt, introduced the current results of three studies conducted in his Lighting Technology Department from TU Darmstadt. NB These studies have not been published yet and are subject to changes. All tests referred to have as yet been performed only in Germany.