Enhancing Arizona Department of Transportation's Traffic Data Resource
The Arizona Department of Transportation (ADOT) undertook a review and evaluation of the technologies used by the agency to process, store, manage, and disseminate traffic data. Traffic count information constitutes the most elemental data that ADOT uses for planning, analysis and monitoring, and yet often remains the least accessible within the agency. ADOT found that different functional departments often duplicated traffic counts, count information was often little understood, and hence not trusted, and consistent data were not accessible throughout ADOT -- there was not a single source where traffic data were collected and disseminated. Through the research ADOT identified a hierarchy of actions designed to more effectively manage this most basic resource, and to restore confidence among users. An implementation plan was developed and is now being acted upon within the department.
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AADT value AASHTO Adjustment Factor ADOT agencies areas Arizona ATR Station ATRC Begin Milepost Component Comments Route coordination currently daily trafﬁc traveling data collection efforts Data Component Comments data elements data record represents Data Team data users Data Warehouse database detectors developed dissemination end milepost Federal Highway Administration FHWA Class ﬁeld for storing ﬁle FIPS State Code forecast trafﬁc Freeway Freeway Management System highway route number highway system HPMS implementation intersection K-Factor linear regression Management System Memo A memo memo ﬁeld Milepost The begin Milepost The end Percent of daily Pima County query raﬂic Ramp Meters Response Route The highway spatial Spd/Len speciﬁc standards statewide storing descriptive text studies Table technologies throughout ADOT TRADAS traffic trafﬁc count trafﬁc data collection Trafﬁc Monitoring Guide trafﬁc monitoring system trafﬁc occurring trafﬁc volumes Traﬁic tuming movement urban vehicle classiﬁcation vehicle weight Yearly Trafﬁc