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1973
1973
1972
COMPARISON OF ACCIDENTS AND ILLUMINATION

Highway Research Record, Issue 416, pp 1-9

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1972
FREEWAY ACCIDENTS AND ILLUMINATION

Highway Research Record, Issue 416, pp 10-20

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1972
FOG DETECTORS FOR CONTROLLING CHANGEABLE-MESSAGE SIGNS

Highway Research Board Special Report, Issue 129, p. 20-23

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1972
THE DISTEC SYSTEM: A SIGN OF OUR TIMES

Highway Research Board Special Report, Issue 129, p. 37-40

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1971
Visibility

Highway Research Record, Issue 377, 148p

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1971
CONTROLLING HEAD-LAMP AIM

Highway Research Record, Issue 377, p. 32-39

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1971
1971
1971
1971
THE VISUAL ENVIRONMENT: ITS EFFECTS ON TRAFFIC FLOW

Highway Research Record, Issue 377, p. 131-148

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1971
LEGIBILITY AND BRIGHTNESS IN SIGN DESIGN

Highway Research Record, Issue 366, pp 37-47

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1971
1971
1970-02
HIGHWAY FOG

NCHRP Research Results Digest, Issue 15, 2 p.

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1970
Night visibility and driver behaviour

Highway Research Record, Issue 336, 114p

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