Skip to main content

Reflective values from DELTA

Danish company DELTA is introducing its new RetroSign GR3 Retroreflectometer for quality control and asset management of road signs and retroreflective materials with laboratory precision. The company says that to achieve these goals the triple geometry retroreflectometer is offered with GPS and RFID (radio frequency identification) reader.
March 16, 2012 Read time: 2 mins
Danish company 199 Delta is introducing its new RetroSign GR3 Retroreflectometer for quality control and asset management of road signs and retroreflective materials with laboratory precision.

The company says that to achieve these goals the triple geometry retroreflectometer is offered with GPS and RFID (radio frequency identification) reader.

The handheld instrument is used for measuring the retroreflection of traffic signs. It measures the coefficient of retroreflection (RA) according to US and European standards.

"The triple geometry facilitates simultaneous measurements at various observation angles as proposed by ASTM (The 3930 American Society for Testing and Materials). The RetroSign GR3 measures simultaneously at observation angles at 0.2/0.33º, 0.5º, and 1º," says DELTA.

"The point aperture geometry specified by ASTM ensures realistic and accurate readings replicating realistic driving conditions. Furthermore it enables the user to determine if a microprismatic sign sheeting material has been applied correctly.

Due to the DELTA proprietary gradient index ultra hard coating (UHC) technology the sensor response meets the ASTM 1709 requirements combining the CIE (International Commission on Illumination) eye response and CIE illuminant A." DELTA says that the RetroSign GR3 is designed to easily interface with current and future ID tagging and asset management systems, and the internal memory stores up to 250,000 readings, "which essentially means that the instrument never runs out of memory."

For more information on companies in this article

Related Content

  • Innovative testing boosts pavement quality
    February 16, 2012
    Innovative materials testing technology will allow the road sector to boost pavement quality, Mike Woof and Patrick Smith report. With billions being spent on highway construction worldwide, governments are looking to make sure their investments last as long as possible.
  • Rapid adoption of GPS machine control
    February 10, 2012
    The high sophistication of GPS machine control systems has resulted in a fast pace of technological advancement. The three major players in the machine control sector, Leica Geosystems, Topcon and Trimble have all made major gains in recent years. The sophistication of the latest systems can combine satellite position data from the GPS and GLONASS networks with information from total stations to provide precise, high speed machine operation. Further more the firms have also prepared themselves for the intro
  • Nedap Identification Systems latest cameras for ANPR
    May 22, 2019
    Dutch identification technology company Nedap has launched two more cameras for its automatic number plate recognition (ANPR) platform. The advanced ANPR Lumo can be applied in challenging vehicular access control applications, including in regions with license plates that include different font formats. The ANPR Access V2 is the successor of Nedap’s ANPR Access, offering better performance while being fully compatible with existing installations, says the company. Both new cameras easily integrate
  • Weigh in motion technology reduces road damage
    February 8, 2012
    Overweight vehicles cause enormous damage to road structures but they can be caught, even at high speed. Weigh-in-motion or WIM devices are designed to capture and record axle weights and gross vehicle weights as vehicles drive over a measurement site.