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Objective
Objective
Finding instances where data are either incomplete or do not facilitate integration and decision support.
Finding instances where data are either incomplete or do not facilitate integration and decision support.
The Iowa DOT, and many partner agencies, are making significant operations, safety, and investment decisions based on a wide variety of data and information sources. For these agencies actions to be effective, each decision must be made based on complete and accurate information. To accomplish this, the agency is developing a Quality Control (QC) focus which will improve agency actions including response, preparation, planning, and operations for both today and in the future.
QC is the most basic level of quality. It includes activities whose purpose is to control the quality of products or services by finding problems and defects (currently within the Wavetronix and INRIX data streams). Quality Control does not ensure quality, it only finds instances where quality is missing. Obviously it's better than nothing, but it has its limitations. The goal of a more comprehensive Quality Management approach is under consideration.
The current and planned future QC activities by CTRE on behalf of OTO are noted below.
Current Work Activities
Current Work Activities
On-going:
On-going:
- Monitoring Wavetronix sensor data (daily) for completeness and quality
- Monitoring INRIX probe data (daily) for completeness and quality
- Manual verification
- Updating INRIX real-time map (automating the process)
Next Steps:
Next Steps:
- Develop clean sensor data sets for sharing across agency
- Enhance QC tools to monitor real-time data quality
- Create reporting and action plans from data completeness and quality efforts
- Incorporating additional data feeds for QC
Completed Work
Completed Work
- Develop tools (heat map) and monitor data completeness and develop sensor quality scores
Interactive Tools
Interactive Tools
INRIX Real-time Data: https://reactor.ctre.iastate.edu/index.php/performance/iowa-inrix-coverage/
INRIX Data Quality Check: https://reactor.ctre.iastate.edu/index.php/data-quality/inrix-data-check/
Sensor Corridor Performance: https://reactor.ctre.iastate.edu/index.php/performance/sensor-performance/
Sensor Data Quality: https://reactor.ctre.iastate.edu/index.php/data-quality/wavetronix-systems-status/
Sensor Status: https://reactor.ctre.iastate.edu/index.php/wavetronix-sensor-status/
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