Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 4101-4120 of 4147
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Forecasting Intersection Traffic Volumes
(American Society of Civil Engineers, 1983)Three growth factor models of the type developed in early transportation planning theory were applied to the estimation of the individual 1‐way traffic movement volumes at 4‐leg intersections. The models use as input the ... -
Sample Size of Pavement Deflections by Nomograph
(American Society of Civil Engineers, 1983)Pavement deflections are used for pavement condition and structural performance evaluation, and overlay design. The Benkelman Beam and the Dynaflect devices are generally used for pavement deflection measurements. A ... -
Estimating Trip Rates from Traffic Counts
(American Society of Civil Engineers, 1983)The research objective was to utilize routinely collected traffic ground counts to estimate directly area‐wide, all‐purpose trip production rates. The methodology distributes and assigns zonal socio‐economic variables ... -
Technique for Identifying Problem Downgrades
(American Society of Civil Engineers, 1983)A simple technique for identifying downgrades prone to runaway truck accidents has been developed and applied to several downgrades in West Virginia. Using geometric, environmental and accident data from 15 downgrades, an ... -
Erratum:“Bus Stop Location and Design” by Michael J. Demetsky and Brian Bin‐Mau Lin (July, 1982)
(American Society of Civil Engineers, 1983) -
Transferabilities of Urban Travel Demand Models
(American Society of Civil Engineers, 1983)This paper presents an analysis of recent investigations on the transferability of passenger travel demand models under different empirical and policy conditions. The results of this study generally indicate that with ... -
Traffic Signal Maintenance Requirements
(American Society of Civil Engineers, 1983)The problems associated with traffic signal maintenance have intensified in recent years as more sophisticated equipment has been installed, and the lack of maintenance has resulted in systems operating in an unacceptable ... -
Hydraulic Cement from Fly Ash and Phosphoric Acid
(American Society of Civil Engineers, 1983)Reaction products of fly ash‐phosphoric acid mixtures of two fly ashes were studied by x‐ray diffraction measurements. The main crystalline reaction product was found to be a complex aluminum, iron phosphate with a probable ... -
Additional Through Lanes at Signalized Intersections
(American Society of Civil Engineers, 1983)One method for increasing the capacity at a signalized intersection is to provide an additional through lane on the approaches to and beyond the intersection. If an additional lane is provided, the question arises as to ... -
Discussion of “<i>Equivalent Granular Base Moduli: Prediction</i>” by Brian E. Smith and M. W. Witczak (November, 1981)
(American Society of Civil Engineers, 1983) -
Red Turn Arrow: Safety Analysis
(American Society of Civil Engineers, 1983)Although use of red turn arrows in traffic signals has been adopted by the -
Junction Stresses in Buried Jointed Pipelines
(American Society of Civil Engineers, 1983)Moments in the intersecting pipelines can be reduced by placing flexible joints. A closed form stiffness matrix for buried pipelines with flexible joints is obtained by solving two differential equations for bending and ... -
Effect of Oil Field Trucks on Light Pavements
(American Society of Civil Engineers, 1983)Oil field traffic is identified and an estimate of increased annual cost associated with a reduced pavement serviceability is determined. Identification of oil field traffic through photographic documentation yielded a ... -
Assess Subgrade Rutting Potential by Stress Factor
(American Society of Civil Engineers, 1983)The problem of subgrade rutting is an important factor in the overall structural design system of flexible pavements. This paper introduces the parameter stress factor in pavement design and research as an expedient and ... -
Midtown Underground Pedestrian Connections Study
(American Society of Civil Engineers, 1983)New York's Metropolitan Transportation Authority (MTA) is conducting a study to improve the underground pedestrian facilities associated with the major subway stations and transportation terminals in midtown Manhattan. ... -
Erratum: “Highways, Transport, and Energy: A Look Ahead” by Herbert S. Levinson, (September, 1982)
(American Society of Civil Engineers, 1983) -
Estimation of Left‐Turn Traffic Parameters
(American Society of Civil Engineers, 1983)The capacity of exclusive left‐turn lanes and the passenger car equivalent of left‐turn vehicles are two parameters commonly used for the planning, design, and operation of signalized intersections. Existing methods for ... -
Subgrade Contact Pressures under Rigid Pavements
(American Society of Civil Engineers, 1983)Subgrade contact pressures under rigid pavements were analyzed using the finite element method for concrete slabs on liquid and elastic subgrades. It was found that when the maximum bending stress in the slab is made in ... -
Glenwood Canyon I‐70: Environmental Concern
(American Society of Civil Engineers, 1983)Environmental concerns and physical constraints involved in the design of Interstate 70 through Glenwood Canyon, a scenic river gorge in Colorado, resulted in a design approach unique for highway projects. The Highway Act ... -
Operational Procedures to Increase Runway Capacity
(American Society of Civil Engineers, 1983)Current procedures for air traffic require that certain distance separations be maintained between aircraft operations on the same runway. The capacity of the runway is inversely proportional to the time headway between ...