00228053

Component

https://onlinepubs.trb.or...bproceedings/21/21-030.pdf

PRIOR TO UNDERTAKING WORK ON THE SPEED RECORDER, SPECIFICATIONS WERE FORMULATED TO COVER WHAT WAS BELIEVED TO BE THE MOST DESIRABLE PRACTICAL TYPE OF INSTRUMENT FOR USE BY THE TRAFFIC ENGINEER. THESE CONSIST OF THREE PRINCIPAL ITEMS: (1) IT MUST IN NO WAY AFFECT THE NORMAL FLOW OF TRAFFIC, (2) IT MUST BE SELF CONTAINED AND EASILY PORTABLE, AND (3) IT MUST BE CAPABLE OF BEING SET UP AND OPERATED BY ONE MAN. A DESCRIPTION OF BOTH THE PORTABLE AND THE STATIONARY TYPES IS PRESENTED. /AUTHOR/

Vol 21, pp 344-347, 6 FIG. 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.

01490426

1942 (approximate)

Highway Research Board Proceedings

Digital/other

Portable equipment; Recording instruments; Speed; Traffic counts

Highways; Operations and Traffic Management

TRIS, TRB

Sep 27 1971 12:00AM

• A STUDY OF CHANGES IN PHYSICAL PROPERTIES OF PUTNAM SOIL INDUCED BY IONIC SUBSTITUTION
• ACCELERATED TESTING OF TRAFFIC ZONE PAINTS
• AN AUTOMATIC TRAFFIC SPEED RECORDER
• ANTICIPATED FUTURE DEVELOPMENT OF THE PRIMARY STATE ROAD SYSTEM IN WEST VIRGINIA
• APPLICATION OF DRIVER BEHAVIOR AND VEHICLE PERFORMANCE STUDIES
• CHECKING COFFERDAMS FOR BRIDGE PIERS
• CHEMICAL DETERMINATION OF CEMENT CONTENT OF SOIL-CEMENT MIXTURES FROM CEMENT-HARDENED BASES
• CONDITION SURVEY OF SOIL-CEMENT ROADS
• DISCUSSION ON SOIL WATER PHENOMENA
• DRIVING PRACTICE AND ITS RELATION TO HIGHWAY CAPACITY: A SYMPOSIUM
• EFFECT OF CALCIUM CHLORIDE ON READINGS OF A VOLUMETER INCLOSING PORTLAND CEMENT PASTES ON ON LINEAR CHANGES OF CONCRETES
• EFFECT OF CALCIUM CHLORIDE ON THE STRENGTH DEVELOPMENT OF CONCRETE STORED AT LOW TEMPERATURES
• FIELD AND LABORATORY INVESTIGATION ON TRAFFIC PAINTS
• FIELD INVESTIGATION FOR FLEXIBLE PAVEMENT DESIGN
• FIELD OBSERVATIONS ON EFFECTS OF JOINTS ON CRACKING AND OTHER DETERIORATION IN CONCRETE PAVEMENTS
• Highway Capacity
• HILL-CLIMBING ABILITY OF MOTOR TRUCKS
• IMPROVEMENT OF METHODS USED IN THE HIGHWAY PLANNING SURVEYS
• INFLUENCE OF BRIDGE WIDTHS ON TRANSVERSE POSITIONS OF VEHICLES
• INVESTIGATIONAL CONCRETE PAVEMENT IN MISSOURI
• INVESTIGATIONAL CONCRETE PAVEMENT IN OREGON
• KANSAS HIGHWAY PROPERTY ACCOUNTING PROCEDURES
• LOAD TESTS ON FLEXIBLE SURFACES
• MEASUREMENT OF AMPLITUDES IN PAVING CONCRETE BEING COMPACTED BY VIBRATION
• MEASURING THE LOAD SUPPORTING VALUE OF FLEXIBLE PAVEMENTS
• PASSING PRACTICES ON RURAL HIGHWAYS
• PLANNING A TRANSPORTATION SYSTEM FOR THE NATIONAL FORESTS
• PSYCHOLOGICAL FACTORS IN HIGHWAY DESIGN AND TRAFFIC CONTROL PROBLEMS: EVALUATION OF DESIGN DATA FOR CROSSOVER DISTANCES
• RELATION OF HIGHWAY DEVELOPMENT TO NATIONAL ECONOMY
• REPORT OF COMMITTEE ON HIGHWAY GUARD: TESTS AND STUDIES, 1924-1941
• REPORT OF COMMITTEE ON PERMITS FOR OVERSIZE AND OVERWEIGHT VEHICLES
• REPORT OF COMMITTEE ON ROADSIDE DEVELOPMENT
• REPORT OF SUBCOMMITTEE ON DESIGN OF NATURAL SOIL MIXTURES AND EFFECT OF ADMIXTURES OF COMMERCIAL PRODUCTS SUCH AS CRUSHED STONE, GRAVEL AND SLAG
• REPORT ON THE COMMITTEE ON TRAFFIC CONTROL AND PROTECTION AT URBAN AND RURAL SCHOOL ZONES
• SIGNIFICANCE OF SOUNDNESS TESTS OF AGGREGATES
• SOIL CONTROL IN CONSOLIDATED MAINTENANCE
• SOIL-EMULSIFIED ASPHALT AND SAND EMULSIFIED ASPHALT PAVEMENT
• STABILIZATION CONTROL ON THE WASHINGTON NATIONAL AIRPORT
• STAGGERED HOURS FOR WARTIME
• STUDY OF STRESS DISTRIBUTION IN SOILS FROM 1920-1940
• TEMPERATURE AND MOISTURE VARIATIONS IN CONCRETE PAVEMENTS
• THE ECONOMICS OF HIGHWAY ALIGNMENT DESIGN
• THE ENERGY CONCEPT OF SOIL MOISTURE AND MECHANICS OF UNSATURATED FLOW
• THE FUTURE DEVELOPMENT OF HIGHWAY TRANSPORTATION
• THE UNCONFINED COMPRESSIVE STRENGTH OF SOIL-CEMENT MIXTURES
• VIBRATION IN PLACEMENT OF CONCRETE
• WHEEL LOAD STRESS DISTRIBUTION THROUGH FLEXIBLE TYPE PAVEMENTS