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1990-12
TRAFFIC SIGNAL CONTROL EQUIPMENT: STATE OF THE ART

NCHRP Synthesis of Highway Practice, Issue 166, 49 p.

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1990-08
ROADSIDE SAFETY: A NATIONAL PERSPECTIVE, JULY 1986

Transportation Research Circular, Issue 362, p. 9-15

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1990-07
1990-07
A VIEW FROM THE ROAD

Transportation Research Circular, Issue 359, p. 8-10

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1990-07
WET-PAVEMENT SAFETY PROGRAMS

NCHRP Synthesis of Highway Practice, Issue 158, 60 p.

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1990-05
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