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Traffic Statistics Unit

Kirk B. Mangold, Manager Highway Statistic Section Division of Program Development 100 N. Senate Ave IGCN, Room N808 Indianapolis, IN 46204 Phone: 317-233-3690 email: kmangold@indot.state.in.us. Traffic Statistics Unit. Automatic Traffic Recorders (ATR) Weigh-in-Motion (WIMS)

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Traffic Statistics Unit

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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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