Technical reports – if you want to know more about measuring retroreflection
DELTA has pioneered the work on road safety since the 60’ties and has been a very active part in writing the current CEN EN standards on measuring retroreflection from pavements and road signs as well as having participated in writing the similar US ASTM standards.
Downloads
RS100 Work on reflection properties of road surfaces, road markings and road signs at DELTA
RS101 Reflection and retroreflection
RS102 Measurement of reflection and retroreflection
RS103 What to know about portable retrometers for pavement markings
RS104 Portable retroreflectometers and structured pavement markings
RS105 Road markings: Choose the right type of retroreflectometer
RS106 Point and annular sign retroreflectometers for measuring retroreflective signs