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1976
OVERHEAD SIGNS WITHOUT EXTERNAL ILLUMINATION

Transportation Research Record, Issue 611, pp 38-44

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1976
DEVELOPMENT OF OPTIMUM SPECIFICATIONS FOR GLASS BEADS IN PAVEMENT MARKING

NCHRP Summary of Progress, p. 152-155

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1970
DEVELOPMENT OF FORMED-IN-PLACE WET REFLECTIVE PAVEMENT MARKERS

NCHRP Report, Issue 85

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1968
PHOTOMETER FOR MEASUREMENT OF REFLEX-REFLECTIVE SIGN MATERIALS

Highway Research Record, Issue 242, pp 15-21

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1966
A STUDY OF ROADSIDE DELINEATOR EFFECTIVENESS ON AN INTERSTATE HIGHWAY

Highway Research Record, Issue 105, pp 21-49

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1962
REQUISITE LUMINANCE CHARACTERISTICS FOR REFLECTIVE SIGNS

Highway Research Board Bulletin, Issue 336, pp 51-60

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1962
TRAFFIC OPERATIONS AND DRIVER PERFORMANCE AS RELATED TO VARIOUS CONDITIONS OF NIGHTTIME VISIBILITY

Highway Research Board Bulletin, Issue 336, No 336, pp 37-50, 9 FIG, 6 TAB, 2 REF

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1960
UNIFIED REFLECTIVE SIGN, PAVEMENT AND DELINEATION TREATMENTS FOR NIGHT TRAFFIC GUIDANCE

Highway Research Board Bulletin, Issue 255

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1951
METHODS AND APPLICATION PROCEDURES FOR PAVEMENT MARKING

Highway Research Board Bulletin, Issue 36, pp 1-6

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1951
AN ACRYLIC REFLECTING MATERIAL WHICH OFFERS NEW AND UNIQUE APPLICATIONS FOR TRAFFIC SIGNS

Highway Research Board Bulletin, Issue 34, pp 1-2

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1948
TRAFFIC PATTERNS AT A NARROW BRIDGE

Highway Research Board Proceedings, Volume 27

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1948
CERTAIN STRUCTURAL COMPONENTS OF LETTERS FOR IMPROVING THE EFFICIENCY OF THE STOP SIGN

Highway Research Board Proceedings, Volume 27

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1943
TRAFFIC CONTROL DEVICES FOR BLACKOUT DRIVING

Highway Research Board Proceedings, Volume 22

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