00227998

Component

https://onlinepubs.trb.or...bproceedings/13/13-003.pdf

TRAFFIC CENSUS DATA ARE USED AS BASES FOR CONSTRUCTION AND MAINTENANCE PROGRAMS, FOR SELECTION OF TYPE AND DESIGN OF PAVEMENTS, FOR SEGREGATION OF ROUTES, FOR APPORTIONMENT OF REVENUES, FOR COMMON CARRIER RATE MAKING, FOR DETERMINING RELATIONS BETWEEN MOTOR VEHICLE TAXES AND GENERAL PROPERTY TAXES AND FOR MANY OTHER PURPOSES. ADVANCE STUDY IS NECESSARY IN ORDER THAT A SURVEY WILL BE CERTAIN TO YIELD THE PARTICULAR DATA WANTED. SUITABLE COMPREHENSIVE FORMS MUST BE ARRANGED AND "DETAILS OF THE MASTER SCHEDULE AND FIELD ORGANIZATION MUST BE DEVISED WITH THE RIGIDITY NECESSARY TO PRODUCE REGULARITY OF OBSERVATION, ADEQUACY OF SUPERVISION AND SPEED IN FILING FIELD REPORTS, CHECKING FOR POSSIBLE ERRORS, AND GENERAL SUPERVISION." HOWEVER, IT MUST BE POSSIBLE TO MAKE QUICK CHANGES TO CARE FOR UNFORESEEN CONTINGENCIES. SINCE THE DAILY TRAFFIC AT A STATION IS COMPUTED FROM OBSERVATIONS MADE UPON COMPARATIVELY FEW ACTUAL DAYS DURING A YEAR AND FOR ONLY A PART OF THOSE DAYS, IT IS IMPORTANT THAT THESE SAMPLES BE SUFFICIENTLY REPRESENTATIVE TO MAKE POSSIBLE AN ADEQUATE ESTIMATE OF THE MEAN DAILY TRAFFIC VOLUMES. IF THE ANNUAL TRAFFIC IS HOMOGENEOUS AND DISTRIBUTED ACCORDING TO THE NORMAL PROBABILITY CURVE, THE STANDARD ERROR IN THE MEAN DAILY TRAFFIC CAN BE DETERMINED BY STATISTICAL METHODS. WHETHER OR NOT TRAFFIC IS SO STABLE AND HOMOGENEOUS AS TO AFFORD CORRECT RESULTS BY STATISTICAL ANALYSIS HAS NOT BEEN FULLY DEMONSTRATED, AND THEREFORE STUDIES OF SUCH COMPLETE STATISTICAL UNIVERSES AS THOSE PROVIDED BY THE YEARLY RECORDS OF TOLL BRIDGES OR TUNNELS ARE ADVOCATED. /AUTHOR/

Vol 13, ParT I, PP 57-65. 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.

01490412

Marsh, B

1934

Highway Research Board Proceedings

Digital/other

Census; Construction; Maintenance; Pavement design; Revenues; Statistical analysis; Taxation; Traffic surveys; Traffic volume; Utilization

Programs

Construction; Data and Information Technology; Finance; Highways; Maintenance and Preservation; Operations and Traffic Management; Pavements; Research

TRIS, TRB

Aug 23 1971 12:00AM

• ALCOHOL AND MOTOR VEHICLE DRIVERS
• AN EXPERIMENTAL ROAD OF CEMENT BOUND MACADAM
• ANALYSIS OF ROAD COST ON THE STATE HIGHWAYS OF WORCESTER COUNTY, MASSACHUSETTS
• APPLICATION OF EQUATION FOR ANNUAL ROAD COSTS
• COEFFICIENT OF FRICTION BETWEEN TIRES AND ROAD SURFACES
• CRACK CONTROL IN CONCRETE BASES FOR SHEET ASPHALT PAVEMENT
• DETERMINATION OF TIME SAVED BY VEHICLES USING THE NEW JERSEY HIGH LEVEL VIADUCT
• FURTHER TRACTIVE RESISTANCE TESTS WITH A GAS ELECTRIC DRIVE AUTOMOBILE
• GRAVEL TYPE STABILIZED SURFACES FOR SECONDARY ROADS
• HIGHWAY LIGHTING RESEARCH
• INTANGIBLE ECONOMICS OF HIGHWAY TRANSPORTATION
• LIQUID BITUMINOUS MATERIALS FOR PLANT MIXED SURFACES
• MOTOR VEHICLE ACCIDENTS AS REFLECTED BY PSYCHOLOGICAL TESTS AND REACTION METER
• NOTES ON TRAFFIC SPEEDS
• PROGRESS REPORT ON THE REACTION OF CALCIUM CHLORIDE ON PORTLAND CEMENT
• REPORT OF COMMITTEE ON MAINTENANCE - TREATMENT OF ICY PAVEMENTS
• REPORT OF JOINT COMMITTEE ON ROADSIDE DEVELOPMENT
• REPORT OF PROJECT COMMITTEE ON FILLERS AND CUSHION COURSES FOR BRICK AND BLOCK PAVEMENTS
• REPORT OF SUBCOMMITTEE ON MAINTENANCE OF CONCRETE PAVEMENT CRACKS AND EXPANSION JOINTS
• RULES OF THE ROAD IN THEORY AND PRACTICE
• SKIDDING CHARACTERISTICS OF ROAD SURFACES
• THE ECONOMY OF HIGHWAY IMPROVEMENTS
• THE EFFECT OF CONTROL METHODS ON TRAFFIC FLOW-TRAFFIC MOVEMENTS AT SEVENTEENTH STREET AND CONSTITUTION AVENUE IN WASHINGTON, D.C.
• THE ENGINEERING VALUATION OF HIGHWAY SYSTEMS - A PROBLEM IN PUBLIC UTILITIES VALUATION
• THE PHOTOGRAPHIC METHOD OF STUDYING TRAFFIC BEHAVIOR
• THE TAXATION OF MOTOR VEHICLES IN 1932
• WEATHERING TESTS ON CONCRETE