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Comprehensive Traffic Monitoring and Statistics Overview for INDOT Programs

This document outlines the traffic statistics programs managed by Kirk B. Mangold at the Indiana Department of Transportation (INDOT). It details various data collection methods, including Automatic Traffic Recorders (ATR) and Weigh-in-Motion (WIM) systems, which are implemented statewide to gather volume, vehicle classification, and speed data. Additionally, it covers the Coverage Count Program and urban traffic data management, alongside calibration processes and quality control measures essential for accurate traffic projections and reporting. The guide serves as an essential resource for effective traffic management and planning.

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Comprehensive Traffic Monitoring and Statistics Overview for INDOT Programs

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  1. Kirk B. Mangold, ManagerHighway Statistic SectionDivision of Program Development100 N. Senate Ave IGCN, Room N808Indianapolis, IN 46204Phone: 317-233-3690email: kmangold@indot.state.in.us

  2. Traffic Statistics Unit • Automatic Traffic Recorders (ATR) • Weigh-in-Motion (WIMS) • Coverage Count Program • Permanent Coverage Counts (PCC) • Urban (MPO) Count Program

  3. Traffic Statistics Unit Automatic Traffic Recorders (ATR) 60 Locations Statewide • Volume • Vehicle Classification Data • Speed Data

  4. Traffic Statistics Unit Weigh-in-Motion (WIM) 45-50 Sites Statewide • Volume • Classification • Weights

  5. Traffic Statistics Unit Coverage Count Program Permanent Coverage Counts (PCC) Urban (MPO) Count Program • 9000 Stations Annually • Manually Set • 48 Hour Duration • 80% Classification • 3 Year Cycle

  6. Minimum Counting Requirements • 48 hours count (By definition of Average Daily Traffic (ADT) • Day of the Week Factors(?) • Axle Adjustment Factors(?) • Seasonal Adjustment factor • Locally generated or • State Supplied

  7. Traffic Statistics Unit • Products • State Highway County Flow maps • Interstate Flow map (http://www.ai.org/dot/roadway/counties.htm) • Factors • Seasonal Adjustment • Annual Factors • Traffic Projections for INDOT Projects

  8. TRAFFIC MONITORING GUIDE • http://www.fhwa.dot.gov/ohim/tmguide/

  9. TRAFFIC MONITORING GUIDE Table of Contents • Traffic Monitoring Guide Executive Summary • Data Collection Framework • Volume Counts • Continuous Count Program • Short Duration Counts • Short Count Program Design • HPMS Counts • Vehicle Classification Counts • Short Duration Classification Counts • Permanent, Continious Classification Counts • Figure 1: Basic Time of Day Patterns • Figure 2:Typical Day of Week Travel Pattern • Factoring of Short Duration Classification Counts • Table 1: Example Truck Factor Groups • Other Recommendations • Calibration and Quality Control • Use of Multiple Classification Schemes • Truck Weight Data • Truck Weight Roadway Groups • Recommended Number, Length, and Location of Counts • Data Aggregation and Reporting • Need for Calibration • Acronyms

  10. Kirk B. Mangold, ManagerHighway Statistic SectionDivision of Program Development100 N. Senate Ave IGCN, Room N808Indianapolis, IN 46204Phone: 317-233-3690email: kmangold@indot.state.in.us

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