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1991-09
1991-09
1991-07
THE PURPOSE OF THE NCHRP REPORT 230 UPDATE

Transportation Research Circular, Issue 374, p. 8

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1991-07
INTERIM MATERIALS ON UNSIGNALIZED INTERSECTION CAPACITY

Transportation Research Circular, Issue 373, 54 p.

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1991-04
FREEWAY GUIDE SIGN REPLACEMENT: POLICIES AND CRITERIA

NCHRP Synthesis of Highway Practice, Issue 155, 43 p.

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1991-03
1991
1991
1991
1991
1991
1991
Highway maintenance operations and research 1991

Transportation Research Record, Issue 1304, 302p

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1991
Geometric design considerations, 1991

Transportation Research Record, Issue 1303, 124p

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1991
HOV facilities and transportation systems management, 1991

Transportation Research Record, Issue 1299, 86p

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