Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 3661-3680 of 4147
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European Air Transport Infrastructure Planning: Present and Future Characteristics
(American Society of Civil Engineers, 1991)There is no doubt that 1992, the year when the unification of the European Common Market will be completed, may influence the contents of the European Community's air transport policy. The views of the airlines and passengers ... -
High‐Occupancy Vehicle Modeling Technique
(American Society of Civil Engineers, 1991)Construction of Boston's 4.4‐billion dollar Central Artery/Third Harbor Tunnel project will begin in the near future, with completion scheduled for the late 1990s. The project's expected significant impact on the regional ... -
Impact of Natural Site Variability on Nondestructive Test Deflection Basins
(American Society of Civil Engineers, 1991)A series of nondestructive tests (NDT) using a falling‐weight deflectometer and Dynaflect was performed at 20 test locations in Arizona. Deflection basins were obtained at 10 ft (3 m) intervals over 90 ft (27 m) length of ... -
Closure to “<i>Issues and Problems of Moving Goods in Urban Areas</i>”
(American Society of Civil Engineers, 1991) -
Measuring Signal Platoon Flow
(American Society of Civil Engineers, 1991)Traffic‐flow models are often based on an assumption of random vehicle arrivals. Arrivals are not random where upstream flow interruptions, such as traffic signals, cause platoons to form. Some way is needed to identify ... -
Toward Intelligent Traffic Signal Design System
(American Society of Civil Engineers, 1991)A framework for an intelligent traffic signal design system, incorporating both expert system technology as well as conventional programming techniques, is presented. This system will help less trained engineers and traffic ... -
Spectral Analysis of Highway Pavement Roughness
(American Society of Civil Engineers, 1991)This paper reports new findings in the spectral analysis of pavement roughness. Elevation profiles of federal and interstate highways were measured with a profilometer, and spectral analysis was used to compute power ... -
Remaining‐Life Consideration in Pavement Overlay Design
(American Society of Civil Engineers, 1991)The thickness deficiency‐based approach is a widely used procedure for pavement overlay design. There is a need to incorporate a remaining‐life consideration into this approach. The traditional thickness deficiency design ... -
Knowledge Base on Semi‐Actuated Traffic‐Signal Control
(American Society of Civil Engineers, 1991)The efficient use of semi‐actuated control requires careful selection of phasing plan, timing design, and detector configuration. Computer simulation can be used to assist in the search for efficient ways of operating such ... -
Network Design Programming of U.S. Highway Improvements
(American Society of Civil Engineers, 1991)This paper describes a network design approach to the selection and programming of alternative route improvements to the U.S. highway network of interstates, four‐lane urban highways, and principal rural arterials. Alternative ... -
Advisory System for Design of Highway Safety Structures
(American Society of Civil Engineers, 1991)A prototype knowledge‐based expert system for assisting engineers in selecting, locating, and designing construction and retrofit projects for traffic barriers, such as roadside barriers, median barriers, bridge rails, and ... -
Discussion of “<i>Issues and Problems of Moving Goods in Urban Areas</i>”
(American Society of Civil Engineers, 1991) -
Evaluation of Street‐Canyon Carbon Monoxide—Dispersion Simulation Model
(American Society of Civil Engineers, 1991)This paper reports on the evaluation of a dispersion simulation model that predicts carbon monoxide (CO), concentrations in urban street canyons. The distribution characteristics of vehicle‐generated carbon monoxide ... -
Development of Prototype Expert System for Roadside Safety
(American Society of Civil Engineers, 1991)Collision of vehicles with fixed objects adjacent to the roadway has been a concern of traffic engineers for many years. One solution to prevent or reduce the number of accidents of this type is to install a traffic barrier ... -
Delphi Study on Bridge Condition Rating and Effects of Improvements
(American Society of Civil Engineers, 1991)As part of an effort to develop guidelines for appraising bridge improvement needs, a Delphi study was conducted to seek opinions from bridge inspectors and engineers in the Indiana Department of Transportation (INDOT). ... -
Practical Applications of Models for Pavement Maintenance Management
(American Society of Civil Engineers, 1991)This paper presents a pavement maintenance management system (PMMS) composed of the following modules: (1) Pavement‐network identification; (2) pavement condition survey and rating procedures; (3) distress‐prediction models; ... -
SPIDA Method for Reinforced Concrete Pipe Design
(American Society of Civil Engineers, 1991)The required supporting strength of a buried pipe is affected by the total load imposed upon the pipe and the manner in which the pipe is supported by the surrounding soil. The classic procedure for designing reinforced ... -
Testing, Verification, and Validation of Expert Systems
(American Society of Civil Engineers, 1991)This paper discusses how an expert system can be tested, verified, and validated. A prototype expert system, the Hazardous Location Analyst (HLA), which analyzes high‐accident locations, is used to illustrate the evaluation ... -
Older Drivers and Intersection Traffic Control Devices
(American Society of Civil Engineers, 1991)This paper examines the relationship between accidents of elderly drivers and intersection traffic control devices. The data was analyzed in two stages, and the analyses were performed using the induced exposure method, ... -
Delphi Methodology for Economic Impact Assessment
(American Society of Civil Engineers, 1991)In 1988, the Roads and Transportation Association of Canada (RTAC) funded a research project to provide a look at the road‐funding situation in Canada, the parameters related to it, and its potential economic ramifications ...