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www.alpinemarkings.com

Type 3 Airport Glass Beads

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RUNWAY INCURSION INCIDENTS AND NEAR ACCIDENTS ON AIRPORT RUNWAYS, TAXIWAYS AND RAMPS ARE ON THE RISE. Nasa Langley Research Center 

“Probably the biggest threat of all, many, many people agree, it is not so much a midair collision as a runway incursion incident.” Richard Healing, Aviation Safety Expert and Former NTSB member 

In Aerodrome Annex 14, Volume 1, ICAO states… “Where operations take place at night, pavement markings should be made with reflective materials designed to enhance the visibility of markings.” 

Markings that cannot be seen by pilots and others operating on marked surfaces are useless. FAA Advisory Circular 150/5340-1J 

RECOMMENDATIONS FROM THE EXPERTS: 

– “Type 3 (1.9 Index of Refraction (IOR) airport beads had the best retro-reflectivity, intially and over time.” DOT/FAA/AR-02/128 Paint and Bead Durability Study by Holly Cyrus 

– The retro-reflectivity data clearly show that the higher IOR (index of refraction, 1.9) Type 3 beads are far superior to Type 1 (IOR, 1.5) beads in intial and long-term retro-reflectivity. Thus, the Type 3 beads will be much more visible from farther distances… A comparative Field Study of Permastripe Polymer Concrete and waterborne Airfield Pavemtn Markings By Kent Newman, PHD US Army Engineer Research and Development Center 

– Using 1.9 index beads in place of 1.5 produces a more efficient retroreflective pavement marking system that is brighter and more visible at night. TRB (Transportation Research Board) Paper 08-0775 Modern Pavement Marking Systems: The relationship between optics and nighttime visibility.

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