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1981-04
RESEARCH PROBLEM STATEMENTS

Transportation Research Circular, Issue 227, 90 p.

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1981-03
RECOMMENDED PROCEDURES FOR THE SAFETY PERFORMANCE EVALUATION OF HIGHWAY APPURTENANCES

NCHRP Report, Issue 230, 42 p.

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1981
Highway geometric design

Transportation Research Record, Issue 806, 49p

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1981
Operational effects of geometrics and improvement evaluations

Transportation Research Record, Issue 819, 49p

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1981
General soils problems

Transportation Research Record, Issue 827, 44p

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1981
Landscape and environmental design

Transportation Research Record, Issue 822, 26p

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1981
Pavement Management and Rehabilitation of Portland Cement Concrete Pavements

Transportation Research Record, Issue 814, 70p

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1981
Layered pavement systems

Transportation Research Record, Issue 810, 77p

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1981
ESTIMATING TRANSIT SUPPLY REQUIREMENTS FOR ALTERNATIVES ANALYSIS

Transportation Research Record, Issue 835, pp 24-30

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1981
RELOCATION AND REAL PROPERTY ACQUISITION

Transportation Research Board Special Report, Issue 192, 51 p.

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1981
SUMMARY OF PROGRESS THROUGH 1981 (NCHRP)

NCHRP Summary of Progress, 177 p.

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1981
FATIGUE CRACKS AND THEIR DETECTION

Transportation Research Record, Issue 832, pp 28-35

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1981
PREDICTION OF STORM-INDUCED SEDIMENT YIELD FROM HIGHWAY CONSTRUCTION

Transportation Research Record, Issue 832, pp 1-6

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1981
PAVEMENT DESIGN OF UNSURFACED ROADS

Transportation Research Record, Issue 827, pp 21-26

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1981
USE OF PRAIRIE VEGETATION ON DISTURBED SITES

Transportation Research Record, Issue 822, p. 10-17

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1981
SAFETY REST AREAS: PLANNING, LOCATION, AND DESIGN

Transportation Research Record, Issue 822, pp 1-6

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1981
UNDERSTANDING THE EFFECT OF TRANSIT SERVICE RELIABILITY ON WORK-TRAVEL BEHAVIOR

Transportation Research Record, Issue 794, pp 33-41

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1981
ESTIMATING VEHICLE WEIGHT DISTRIBUTION SHIFTS RESULTING FROM CHANGES IN SIZE AND WEIGHT LAWS (ABRIDGMENT)

Transportation Research Record, Issue 828, pp 16-18

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1981
HIGHWAY-RELATED TORT CLAIMS TO IOWA COUNTIES

Transportation Research Record, Issue 833, pp 18-24

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1981
ALTERNATIVE SIGN SEQUENCES FOR WORK ZONES ON RURAL HIGHWAYS (ABRIDGMENT)

Transportation Research Record, Issue 833, pp 13-17

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1981
USE OF CHEVRON PATTERNS ON TRAFFIC CONTROL DEVICES IN WORK ZONES (ABRIDGMENT)

Transportation Research Record, Issue 833, pp 3-6

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1981
SPEED ENFORCEMENT, VISIBILITY, AND EFFECTS OF TRAFFIC CONTROL MEASURES ON DRIVERS

Transportation Research Record, Issue 811, 41 p

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1981
BETTER METHOD FOR MEASURING PAVEMENT ROUGHNESS WITH ROAD METERS

Transportation Research Record, Issue 836, pp 35-41

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1981
ROAD ROUGHNESS: ITS ELEMENTS AND MEASUREMENT

Transportation Research Record, Issue 836, pp 1-7

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1981
STATE OF THE ART OF MEASUREMENT AND ANALYSIS OF ROAD ROUGHNESS

Transportation Research Record, Issue 836, pp 21-29

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