Operational Evaluation of U-Turns at At-Grade Signalized Diamond Interchanges

Author(s):  
Hongmin “Tracy” Zhou ◽  
Jonathan Tydlacka ◽  
Liang Ding

U-turn lanes are commonly provided at at-grade diamond interchanges with frontage roads to reduce delays for U-turning traffic and for the interchange as a whole; however, there are currently many unknowns related to their design, operation, and use. Researchers of this study assessed the existing practice of U-turn implementation by evaluating operations of U-turn lanes at 25 diamond interchanges in Texas through field data collection and simulation analysis. Researchers determined the performance and limitations of U-turn lanes under various geometric and operational conditions, identified and investigated several factors affecting U-turn lane use, and determined the anticipated effectiveness of proposed solutions to U-turn operational issues. This paper provides implementable guidelines for designing and operating U-turn lanes at diamond interchanges. Among the ten countermeasures studied in this paper, closing nearby driveways, adding acceleration lane for U-turn departures, and separating U-turn departures from conflicting traffic using pylons were found to be effective solutions to improve U-turn operations.

2018 ◽  
Author(s):  
Casey J. Duncan ◽  
◽  
Marjorie A. Chan ◽  
Elizabeth Hajek ◽  
Diane L. Kamola ◽  
...  

2018 ◽  
Vol 9 (1) ◽  
pp. 24-34
Author(s):  
Sandey Tantra Paramitha

The development of early childhood physical health largely determined by levels of phosphorus contained in the body, due to be the second largest item after the calcium in the human body,  problems become obstacles in developing family knowledge about the importance of the content of phosphorus in the development of early childhood body i.e. environmental conditions is lacking support and there is no massive support from the Ministry of Health important about phosphorus for the growth of early childhood. This research uses descriptive method which aims to describe, illustrate and analyze events in field data collection techniques, using interviews, observation and documentation, as well as using the techniques of data analysis the presentation of data, data reduction and withdrawal of the conclusion. The results obtained show that the society have less knowledge about the importance of phosphorus for early childhood growth, hence the need for the development of the knowledge society on the importance of phosphorous for growth in early childhood, it due to the excess or deficiency of phosphorus will not impact the tub for the body.


2021 ◽  
Vol 2 (2) ◽  
pp. 223-234
Author(s):  
Gunawan Putrado ◽  
Fakhry Zamzam ◽  
Neny Rostiati

The purpose of this study was to determine the effect, motivation and compensation on work discipline of employees of the Outsourcing Atmrc Unit of PT BNI Persero Tbk Palembang Regional Office partially or simultaneously. This research method uses survey and verification descriptives, field data collection uses questionnaires, interviews and documentation. This research is an associative research, where in this study there are variables that are related and can influence other variables. The population of this study were 62 employees of the BPKP Representative Office Auditor, South Sumatra Province. Data processing using SPSS 25 analysis tool. The results of the study stated that performance had an effect on work discipline, there was an effect of motivation on work discipline, compensation had an effect on work discipline. Performance, Motivation and Compensation affect Discipline simultaneously


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