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Traffic Monitoring Challenges and Opportunities – Presentation – Office of Highway Policy Information (OHPI)


Traffic Monitoring Challenges and Opportunities

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Highway Information Seminar

Thursday, November 17, 2011
10:00 p.m. to 11:30 a.m.
Room – Washington #2

1200 New Jersey Avenue
Washington, DC 20590






The goal of this session is to discuss challenges and opportunities faced in the traffic monitoring world – new legislation, private business involvements, monitoring technology, vehicle to vehicle and vehicle to infrastructure


New Legislation

  • ISTEA ('91-'97)
$155 B
  • TEA-21 ('97-'03)
$218 B (>40%)
  • SAFETEA-LU ('03-'09)
$244 B (>12%)
  • MAP 21
$??? B (> or <??%)


Performance Management

  • Accountability
  • Performance Measurement
  • Benefits and Cost Analysis
  • Other program evaluation and analysis


Private Business Engagement

Roadway Networks

Tele Atlas


Private Business Engagement

Traffic Data

  • TomTom
  • Garmin
  • Magellan
  • Mio
  • INRIX Traffic
  • Traffic.COM
  • On Star
  • GPS Tracking
  • others


Private Business Engagement



Monitoring Technology

Intrusive vs. none intrusive
Infrastructure based vs. vehicle based


Reporting Technology

Internet Based
Phone 511
Mobile applications


Operations-Traffic Monitoring

  • Private vs. Public operations
  • 511 Centers and TMC precedents


Vehicle to Vehicle and Vehicle to Infrastructure

How V-2-V affects data collection

(Connected Vehicle)

How V-2-I affects data collection


Immediate Needs

  • VMT by vehicle type and roadway functional class methods
  • VMT with local roadways methods
  • Travel Times
  • Speed data


Speed Data Format

  • Flexible – allows 15 to 25 bins
  • Flexible – allows 5, 15 or 60 minute time intervals
  • 5 mph bin increments
  • Flexible 10 mph (bicycle) to 120 mph speeds (safety)


Per Vehicle Data Format

Flexibility and foundation for other data programs

  • Axle Weights (left and right)
  • Axle Spacing's
  • Vehicle Speed
  • Vehicle Length
  • Time to sub second interval
  • Pavement Temperature
  • Headway / Occupancy
  • Inductive Signatures or other entry


Thank You!

Highway Information Seminar
Presented by Steven Jessberger for
Tianjia Tang

FHWA, 1200 New jersey Avenue,
Washington, DC 20590


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