Naturalistic Driving Study: Technical Coordination and Quality Control (2014) / Chapter Skim
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Pages 60-67
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60 C h a p t e r 4 Data Collection/Ingestion process Data transfer began when the site contractors inserted a vehicle's data drive into the solid-state data drive bay apparatus attached to their respective site server, which provided the interface for the data to be transferred from the SSD to the staging server. The data transfer and subsequent processing through ingestion were controlled by a workflow system designed and implemented in the Coordination Contractor's high performance computing (HPC)
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61 personally identifying information and were therefore necessarily guarded from exposure to users or hackers who were not IRB-approved to work with the data. Data security began at the point where data were collected and stored on the DAS hard drive.
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62 with the units and/or categories available for the standard variables. For example, the network speed for a particular vehicle might have been collected in miles per hour units.
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63 previously, with an eye toward identifying specific vehicles in need of camera adjustment or replacement. Table 4.1 summarizes the standards to which each camera view was held for the purposes of this quality assurance and control process.
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64 all DASs installed in SHRP 2 vehicles were operating in an optimal fashion. Non-DAS Data Assuring the quality of the time series data and video collected via the DAS was a central focus of the overall quality efforts; but considerable effort was also devoted to assuring the quality of the many non-DAS sources of data, as described below.
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From page 65... ...
65 Driver Functional Assessments Functional assessments, as previously referenced, were collected from each primary participant, typically at the outset of each one's participation. Questionnaire responses were reviewed for completeness and accuracy.
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66 attempted. Participants who did not complete the assessment were flagged and marked as needing to complete the assessment at deinstallation, if possible.
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67 batteries that might be equipped with higher-cranking amps and voltage. The boundary of 100 psi was determined given that normal passenger vehicle tires require no more than 35 psi.
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