Meeting local needs for training, technical assistance, and research in transportation

Retroreflectometer

A retroreflectometer is an instrument capable of measuring the light-reflecting properties of signs accurately and reliably. Using a retroreflectometer is an accurate way of measuring a sign’s retroreflectivity level during the daylight hours. It is a good method for checking signs and identifying those that do not meet the federal standard minimum level of retroreflectivity. Road signs are one of the most important means of insuring motorists’ safety.

Retroreflectometer


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