Performance Measures Used in the DFW Region – How to Track

and Report the M & O Investment and Results

AMPO Management and Operations Work Group

September 28-29, 2006

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Regional

Modeled and Observed

Freeway

Corridor

Observed

Freeway and Arterial

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Congestion: A Growing Problem

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Percentage of Roadways Congested (LOS D, E or F)

Model Output0 to 30 Percent, not Congested

30 to 60 Percent, Moderately Congested

Above 60 Percent, Severely Congested

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Observed Data

Moderate or Intermittent Congestion (30 – 50 mph or 45 – 60 pcplpm)

Severe Congestion (<30 mph or > 60 pcplpm)

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Relationship of Vehicle Density to Vehicle Speed

Sp

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Density of Vehicles

Low

High

Low High

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Thoroughfare Assessment Program

Data CollectionSystem Analysis (including emission

calculations, NCTCOG)Recommend Improvements (timing plans

and low-cost capital improvements)Implementation and Fine-TuningAfter AssessmentDocumentation of Results

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Thoroughfare Assessment Program – Performance Measures

Travel Time – Modeled/ObservedDelay – Modeled/ObservedNumber of Stops - Modeled/ObservedAverage Speed – Modeled/ObservedEmissions (VOC and NOx) – Modeled/

Post-Processed

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Observed ITS DataSpeed, Volume and Lane Occupancy

Average Speed by Direction by Phase

Percent Change in Volumes by Phase

Average Speed by Lane by Phase

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Continue to Develop Inventory of P.M.

Develop Regional Standard P.M.

Continue to Track and Gather Data

Develop a Regular Reporting Schedule

Document Benefits of Projects