00225799

Component

https://onlinepubs.trb.or...hrbproceedings/7/7-007.pdf

IN ORDER THAT THE ATTENTION OF THE DRIVER SHALL BE AS LITTLE DISTRACTED AS POSSIBLE AND THAT DRIVING PROPERLY MAY BECOME A MATTER OF ESTABLISHED HABIT, TRAFFIC REGULATION SHOULD BE AS UNIFORM AS POSSIBLE AND COMMON-SENSE IN NATURE. IMPROPER SIGNALS MAY HAVE AN INFLUENCE BEYOND THEIR ACUTAL LOCATION IN INTERFERING WITH THE FORMATION OF SAFE HABITS. THE COLOR, FORM POSITION AND SPEED OF VISIBILITY OF SIGNS AND SIGNALS IN RELATION TO THESE PRINCIPLES ARE DISCUSSED. THE PROBLEM OF COLOR IS COMPLICATED BY THE FACT THAT COLOR DISCRIMINATION IS NOT THE SAME IN THE PERIPHERAL PORTION OF THE EYE AS IN THE CENTRAL PORTION. SINCE MOST COLOR BLINDNESS CORRESPONDS TO PERIPHERAL COLOR VISION IN THE NORMAL EYE IT IS RECOMMENDED THAT LUMINOUS SIGNAL COLORS BE MADE OF THE HIGHEST POSSIBLE EFFECIENCY FOR PERIPHERAL VISION OF NORMAL DRIVERS. THE USE OF COLORS TO MEAN MORE THAN ONE THING IS CONFUSING AND DANGEROUS. COLORS, SHAPES AND SYMBOLS ARE IMPORTANT IN PROVIDING INFORMATIVE SIGNS WHICH WILL MITIGATE THE EXISTING CONFUSION AND INEFFECIENCY IN SUCH SIGNS.

Vol 7, Part I, PP 63-74; part of Report of Committee on Causes and Prevention of Highway Accidents. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

01490405

1928

Highway Research Board Proceedings

Digital/other

Color; Location; Peripheral vision; Position fixing; Shape; Standardization; Traffic signals; Traffic signs; Visibility

Highways; Operations and Traffic Management; Safety and Human Factors

TRIS, TRB

Jul 25 1971 12:00AM

• A METHOD OF MEASURING RELATIVE EFFICIENCY OF TRAFFIC FLOW THROUGH STREET INTERSECTIONS
• A RESUME OF RESULTS FROM STUDIES MADE ON BRICK PAVEMENTS
• A SURVEY OF ACCIDENTS INVOLVING TRUCKS AT HARTFORD, CONNECTICUT, JANUARY 1- JULY 1, 1927
• BERM MAINTENANCE
• BITUMINOUS PAVEMENTS
• BRIDGE MAINTENANCE
• CAUSES AND CURE OF FROST BOILS
• COARSE AGGREGATES
• CURING CONCRETE PAVEMENTS
• DESIGN OF CONCRETE MIXTURES
• DISCUSSION, REPORT OF COMMITTEE ON HIGHWAY TRAFFIC ANALYSIS
• DISCUSSION, REPORT OF COMMITTEE ON MAINTENANCE
• EFFECTS OF LOADS ON PAVEMENTS AS INDICATED BY STRESS MEASUREMENTS
• FATIGUE OF CONCRETE
• FINE AGGREGATES
• HIGHWAY ACCIDENT STATISTICS
• INDUSTRIAL RESEARCH - A RETROSPECT AND A PROSPECT OF SCIENTIFIC INVESTIGATION IN INDUSTRY
• INFLUENCE OF STEEL REINFORCEMENT ON CONCRETE PAVEMENTS
• INTRODUCTION OF PLANES OF WEAKNESS IN CONCRETE SLABS TO CONTROL CRACKING
• LANDSLIDES
• MAINTENANCE OF GRAVEL AND STONE ROADS, ESPECIALLY SURFACE TREATMENTS
• NEW TRAFFIC FLOW RECORDER IN USE ON CLEVELAND TRAFFIC SURVEY
• PORTLAND CEMENT
• PRESENT STATUS OF LEGAL REGULATION OF AUTOMOBILE HEADLIGHTS, TAIL LIGHTS AND MOTOR VEHICLE BRAKES IN THE UNITED STATES
• REPORT OF COMMITTEE ON HIGHWAY TRAFFIC ANALYSIS
• REPORT OF DIRECTOR
• REPORT OF SUBCOMMITTEE ON MOTOR TRUCK IMPACT STUDIES, BUREAU OF PUBLIC ROADS INVESTIGATION
• REPORT OF SUBCOMMITTEE ON SUBGRADE STUDIES
• REPORT ON CULVERT INVESTIGATION
• RESEARCH IN PORTLAND CEMENT CONCRETE PAVEMENTS
• SEMI-GRAVEL, TOP-SOIL, AND SAND-CLAY ROAD MATERIALS
• SNOW REMOVAL AND SNOW REMOVAL EQUIPMENT
• TESTS ON FINISHED CONCRETE
• THE DEMONSTRATION AND DRAMATIZATION OF RESEARCH
• THE RAILROAD GRADE-CROSSING HAZARD ON RURAL HIGHWAYS
• THEORY OF CONCRETE PAVEMENT DESIGN
• TOP DRESSING OR DRY MAINTENANCE ROADS