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

  • 'Five innovations in one'
    April 11, 2012
    The new ZRM 6014 road marking retroreflectometer from Zehntner is said to incorporate five innovations in one go: telescope handle and wheels as standard, colour touch display, camera, level meter and compass.
  • Weigh in motion systems aid safety, reduce costs
    February 14, 2012
    Advanced weigh-in-motion (WIM) systems can offer a quick payback time
  • Asphalt and bitumen - testing for performance
    February 29, 2012
    The stresses placed on modern asphalt and bitumen means that specialist equipment is essential to make sure performance specifications are met. As road traffic increases at a rapid pace and road safety becomes a priority issue, asphalt is put under increasingly higher stresses. For example, road surfaces are subject to compression, flexural tensions and tangential stresses: internal friction, depending on the aggregates, and the cohesion, guaranteed by bitumen's composition, are the two main properties whic
  • Advances in road markings
    March 16, 2012
    Recent months have seen many major and vital road marking projects and products completed and tested in different parts of the world. Guy Woodford looks at some of them in Europe, North America, the Middle East and Africa. The London borough of Kensington and Chelsea now has one of the most dramatic streetscape designs in Europe. Exhibition Road’s striking chequered granite design, featuring a single surface running from South Kensington Station to Hyde Park and the full width of the road from building to b