Naturalistic Driving Study: Field Data Collection

2014 ◽  
Author(s):  
Alan Blatt ◽  
John Pierowicz ◽  
Marie Flanigan ◽  
Pei-Sung Lin ◽  
Achilleas Kourtellis ◽  
...  
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.


Author(s):  
Bashar Dhahir ◽  
Yasser Hassan

Many studies have been conducted to develop models to predict speed and driver comfort thresholds on horizontal curves, and to evaluate design consistency. The approaches used to develop these models differ from one another in data collection, data processing, assumptions, and analysis. However, some issues might be associated with the data collection that can affect the reliability of collected data and developed models. In addition, analysis of speed behavior on the assumption that vehicles traverse horizontal curves at a constant speed is far from actual driving behavior. Using the Naturalistic Driving Study (NDS) database can help overcome problems associated with data collection. This paper aimed at using NDS data to investigate driving behavior on horizontal curves in terms of speed, longitudinal acceleration, and comfort threshold. The NDS data were valuable in providing clear insight on drivers’ behavior during daytime and favorable weather conditions. A methodology was developed to evaluate driver behavior and was coded in Matlab. Sensitivity analysis was performed to recommend values for the parameters that can affect the output. Analysis of the drivers’ speed behavior and comfort threshold highlighted several issues that describe how drivers traverse horizontal curves that need to be considered in horizontal curve design and consistency evaluation.


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