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ITS Data Quality: Assessment Procedure for Freeway Point Detectors. Final rept. Jul 02-Dec 03.
| 题名： | ITS Data Quality: Assessment Procedure for Freeway Point Detectors. Final rept. Jul 02-Dec 03. |
| 作者： | Smith-B.L.; Venkatanarayana-R.; Smith-C.D. |
| 关键词： | *Traffic-monitoring; *Detectors-; *Data-quality.;Monitoring-; Real-time-information; Virginia-; Transportation-systems; Surveillance-; Assessment-procedures; Alternatives-; Data-collection. |
| 摘要： | The Virginia Department of Transportation (VDOT) has made significant investments in the traffic-monitoring infrastructure that supports intelligent transportation systems (ITS). The purpose of this infrastructure is to provide accurate, real-time information on the status of the transportation system; thus it is critical that the monitoring infrastructure provide accurate data. Although detectors are usually tested immediately after installation, it is well known that they operate in a very harsh environment and thus are susceptible to degradation in accuracy and/or complete failure. Consequently, a long-term commitment to data quality assurance is required through maintenance, data quality assessment testing, and repair/replacement. The quality of data from ITS applications is becoming increasingly important as the data are more widely used. Not only is the data used in real-time operations, but also in myriad other, often more traditional, transportation applications. The purpose of this research project was to develop a procedure that VDOT could use to assess its ITS data quality. The report includes a data quality assessment procedure that is based on theory, practice, and empirical investigation. |
| 报告类型： | 科技报告 |
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