Delta will, as usual, be present at Intertraffic Amsterdam 2018 showing and demonstrating its range of retroreflectometer instruments. Since the last event, the company has launched RetroSign GRX, its third-generation instrument for measuring retroreflection of road traffic signs, high visibility clothing, conspicuity tapes and number plates. RetroSign GRX is able to measure up to seven observation angles simultaneously, up to eight entrance angles using smart adapters, and offers many new features like