Night visibility

Overview

Measures the coefficient of retroreflected luminance (night visibility) of road markings. The observation angle of 2,29° corresponds to the viewing distance of a vehicle driver of 30 m under normal conditions. The illumination angle is 1,24°.

Retroreflection value R of road studs

A raised pavement marker is a safety device used on roads. These devices are usually made with plastic, ceramic, or occasionally metal, and come in a variety of shapes and colors. Many varieties include a lens or sheeting that enhance their visibility by reflecting automotive headlights. Road studs might be damaged due to high speed and snow plugs. Road studs increase the visibility of road markings.

Coefficient of retroreflection RA of traffic signs

Performance limits to the coefficient of retroreflection RA of traffic signs are defined within international standards. A traffic sign with a high visibility attribute has a big importance because it improves the safety on the road.

Coefficient of retroreflection R‘ of safety garments and contour safety markings

Performance limits to the coefficient of retroreflection R‘ of safety garments and contour safety markings are defined within international standards. High-visibility clothing has highly reflective properties mostly be retroreflective stripes. Yellow waistcoats are a common example.

ZDR 6020

ZDR 6020

Dynamic Retroreflectometer RL

Mobile retroreflectometer for continuous measurement of the night visibility RL for all types of road markings at normal traffic speed.

ZRM 6006

ZRM 6006

Retroreflectometer RL/Qd

Budget priced user-friendly entry level retroreflectometer with one button operation for measuring night and day visibility.

ZRM 6010

ZRM 6010

Retroreflectometer RL

Top class external beam retroreflectometer for measuring night visibility RL in dry condition as well as under standard conditions of continuous wetting of road and airport markings.

ZRM 6013+

ZRM 6013+

Retroreflectometer RL/Qd

Retroreflectometer with memory for determining the retroreflection of road markings.

ZRM 6014

ZRM 6014

Retroreflectometer RL/Qd

Portable handheld top class retroreflectometer with innovative options for measuring night and day vision of road markings.

ZRP 6030

Retroreflectometer

Portable handheld retroreflectometer for determination of the night visibility (coefficient of luminous intensity R and RI) of road studs, ambient temperature (°C/°F) as well as relative humidity (rH %).

ZRS 6060

ZRS 6060

Retroreflectometer

New generation of ergonomic retroreflectometer for measuring traffic signs and safety garments of three different observation angles at the same time.