Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 3701-3720 of 4147
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Highway Elements Associated with Tort Liability Actions
(American Society of Civil Engineers, 1991)With the loss of sovereign immunity, risk management has become an important discipline for many state highway and transportation departments. One step in an effective risk management process is the evaluation of past tort ... -
Computer‐Based Routing and Scheduling in Metropolitan Regions
(American Society of Civil Engineers, 1990)Urban development patterns in the United States have made distribution and collection functions in local commerce difficult. Both the geographical spread of commercial activities and local highway traffic interferences ... -
Corridor and Eis Studies Enter the CADD Age
(American Society of Civil Engineers, 1990)Until recently, most major corridor studies and studies of environmental impact statements have been done using traditional manual methods. The major stumbling block to performing corridor and EIS studies cost‐effectively ... -
Editorial
(American Society of Civil Engineers, 1991) -
AASHTO Rigid Pavement Design Equation Study
(American Society of Civil Engineers, 1991)In 1986, a revised rigid pavement design equation was introduced by the American Association of State Highway and Transportation Officials. The revised equation contains new input parameters such as: reliability, -
Automation for Transportation—More Than Data Processing
(American Society of Civil Engineers, 1990)Years ago, when the word automation was mentioned, transportation officials immediately visualized large computers generating piles of meaningless printouts that would take weeks to read and provide little or no benefits. ... -
Position CAD Data Integration for Improved Construction Control
(American Society of Civil Engineers, 1990)Highway construction techniques have seen a limited number of changes since the 1950s. The primary changes have seen a slow evolution in productivity improvements such as hydraulic controls, and drivetrain components. A ... -
ITDS: Past, Present, and Future
(American Society of Civil Engineers, 1990)The integrated traffic data system (ITDS) is a microcomputer‐based system that is designed to allow traffic engineers to store, maintain, and update traffic network information in a centralized data base. The information ... -
Expert System for Traffic Control in Work Zones
(American Society of Civil Engineers, 1990)The development of a prototype knowledge‐based expert system (KBES) for selecting appropriate traffic control strategies and management techniques around highway work zones is described. The knowledge base of this KBES is ... -
Emergency Response System for Dangerous Goods Movements by Highways
(American Society of Civil Engineers, 1990)Artificial intelligence, using a prototype expert system, was applied to transportation issues. The specific issue dealt with improving the quality of the dispatch information in emergency situations involving dangerous ... -
Igrid—Computer‐Aided Roadway Design and Drafting System
(American Society of Civil Engineers, 1990)The Texas State Department of Highways and Public Transportation uses the Interactive Graphics roadway design system (IGrds), an AASHTOWARE product of the American Association of State Highway and Transportation Officials ... -
Highway Infrastructure, Heavy Trucks, and Expert Systems
(American Society of Civil Engineers, 1990)In an effort to develop tools to help address various aspects of heavy truck size and weight impacts on pavements, bridges, truck safety, and economics, the Roads and Transportation Association of Canada undertakes research ... -
Knowledge‐Based System for Managing Intersection Safety
(American Society of Civil Engineers, 1990)Management of traffic safety is a complex process that requires decision making under uncertainty in assessing the influence of different conditions on safety in the selection of the optimal treatment. To deal with the ... -
On‐Line Traffic Assignment for Optimal Freeway Corridor Control
(American Society of Civil Engineers, 1990)Traffic management and control strategies in a network could be improved by employing a method that can simulate and evaluate the expected impacts of alternative strategies on network performance prior to implementation. ... -
Improving Steep Bends as Hairpin Curves on Mountainous Roads
(American Society of Civil Engineers, 1990)Steep bends on mountainous roads (i.e., horizontal curves that are as sharp as well as steep) are recognized traffic hazards, but quite often they are left as such, since simultaneous easing of curvatures and gradients ... -
Shape Characteristics of Pavement Performance Curves
(American Society of Civil Engineers, 1990)Pavement performance can be represented either in load domain or time domain plots. The shape characteristics of pavement performance curves in the two types of plot are not the same. Plotting pavement performance in time ... -
Multimessage Fiber‐Optic Lane‐Control Signs for Freeway Applications
(American Society of Civil Engineers, 1990)Four prototype multimessage fiber‐optic lane control signs were evaluated for the Ministry of Transportation of Ontario to determine their suitability for freeway‐lane‐control‐signing applications. The evaluation consisted ... -
Traffic Control Systems—Past, Present, and Future
(American Society of Civil Engineers, 1990)Traffic control systems are technological laggards when compared with modern control systems used in industry today. The traffic control industry lacks—and often refuses to adopt—necessary standards that will allow it to ... -
Urban Network Traffic Simulations: TRAF‐NETSIM Program
(American Society of Civil Engineers, 1990)The network simulation program NETSIM is now a component model of the integrated traffic simulation system TRAF. The current version of the model is therefore referred to as the TRAF‐NETSIM program. As part of an effort ... -
Cut and Fill Calculations by Modified Average‐End‐Area Method
(American Society of Civil Engineers, 1990)A procedure for computing cut and fill volumes using a modification of the average‐end‐area formula is presented. Three types of calculations designed to address the various combinations of cut and fill areas at the section ...