EFFECT OF VEHICULAR ROLL ON POLARIZED HEADLIGHTING
THE RESULTS OF AN EXPERIMENTAL STUDY IN EXPLORING THE EFFECT OF VEHICULAR ROLL ON POLARIZED HEADLIGHTING PERFORMANCE AND DRIVER COMFORT ARE REPORTED. POLARIZED HEADLIGHTING OPERATION RELIES ON THE PHENOMENON THAT TWO POLARIZERS WITH THEIR PLANES OF POLARIZATION MUTUALLY PERPENDICULAR PERMIT ONLY A NEGLIGIBLE AMOUNT OF LIGHT TO PASS THROUGH TO AN OBSERVER. HOWEVER, AN INCREASING AMOUNT OF LIGHT LEAKAGE OCCURS AS THE PLANES OF POLARIZATION ARE ROTATED AWAY FROM THEIR PERPENDICULAR RELATION. THIS LEAKAGE CAUSED BY VEHICULAR ROLL, HAS AN INSIGNIFICNAT EFFECT ON THE ABILITY OF DRIVERS TO DETECT PAVEMENT MARKINGS AT NIGHT, ADDING FURTHER SUPPORT TO THE LOGIC OF USING POLARIZED HEADLIGHTING SYSTEMS. NEITHER HIGH INTENSITY POLARIZED HEADLIGHTING NOR CONVENTIONAL HIGH BEAM HEADLIGHTING WAS SIGNIFICANTLY AFFECTED BY VEHICULAR ROLL. DATA OBTAINED SHOWED THAT POLARIZED HEADLIGHTING IMPROVED TARGET DETECTION DISTANCES BY 32 PERENT OVER HIGH BEAM HEADLIGHTING. THESE SAME DATA, ALSO USED TO ANALYZE THE RELATION BETWEEN DETECTION DISTANCES AND LATERAL PAVEMENT- MARKING POSITIONS (CENTERLINE OR SHOULDER), SUPPORT THE USE OF PAVEMENT-EDGE MARKINGS. /AUTHOR/
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/1586080
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Supplemental Notes:
- Vol 36, No 7, PP 148-157
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Authors:
- Adams, W S
- Publication Date: 1971-4
Media Info
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Serial:
- Public Roads
- Publisher: Federal Highway Administration
- ISSN: 0033-3735
- Serial URL: https://www.fhwa.dot.gov/publications/publicroads/
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Publication flags:
Open Access (libre)
Subject/Index Terms
- TRT Terms: Comfort; Drivers; Experiments; Headlamps; Polarized light; Road markings; Rolling; Rotation; Tracking systems; Vehicles
- Old TRIS Terms: Plane polarization; Target detection; Traffic marking
- Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment;
Filing Info
- Accession Number: 00221311
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 11 1971 12:00AM