Portable retroreflection measurement for raised pavement markers and road studs
The Zehntner ZRP 6030R is a portable retroreflectometer designed to evaluate the nighttime retroreflective performance of raised pavement markers, commonly known as road studs or pavement reflectors. It provides an objective method for checking the visibility performance of these markers under standardized measurement geometry.
Measure nighttime retroreflection of raised pavement markers
The ZRP 6030R measures the nighttime reflective performance of pavement markers by evaluating the light returned toward the observer. This makes it suitable for checking retroreflective road studs and other raised pavement markers used to provide visual guidance to drivers at night.
Designed for ASTM E1696 measurements
The instrument supports measurement geometry according to ASTM E1696-02 for raised retroreflective pavement markers. Configurations include an observation angle of 0.2° with a 1° entrance angle or an observation angle of 0.3° with a 1° entrance angle.
Integrated temperature and humidity measurement
In addition to retroreflection measurement, the ZRP 6030R simultaneously measures ambient temperature in °C and relative humidity (rH%). Recording these environmental conditions provides useful context when carrying out field measurements and documenting test conditions.
PC and printer connectivity
The ZRP 6030R incorporates interfaces for connection to a computer and printer, supporting the transfer and documentation of measurement results. This allows results obtained during inspection and quality-control work to be recorded for subsequent evaluation or reporting.
Portable instrument for field quality control
The portable design allows raised pavement markers to be evaluated directly where they are installed. The instrument is therefore suitable for field inspection and quality-control work where the retroreflective performance of pavement markers needs to be checked objectively rather than assessed only by visual observation.
Proven use for testing pavement-marker performance
The ZRP 6030R has been used in independent laboratory testing of aluminium and plastic raised pavement markers to determine their coefficient of luminous intensity. This type of measurement is particularly relevant when verifying the nighttime visibility performance of reflective pavement markers.
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