The Mn DOT Metro District Microsimulation Experience Kevin

The Mn. DOT Metro District Microsimulation Experience Kevin Sommers, PE Minnesota Department of Transportation Kevin. Sommers@DOT. state. mn. us 651 -234 -7844

In the Beginning…. Models were developed according to user preferences. l Several items considered optional including model calibration. l Typical model was 1 time period of 60 minutes without origin-destination data. l Reported values based on a single run of model. l

CORSIM Training Manual l Developed By Mn/DOT & FHWA to: Ø Clarify modeling process. Ø Produce reusable and verifiable products. Ø Meet Federal operational analysis requirements for the Interstate Access Request.

CORSIM Training Manual l Lists 21 items to be followed on all modeling projects. l Categories: Ø Model Requirements Ø Data Requirements Ø Calibration Requirements Ø Quality Control Requirements

CORSIM Training Manual l Lists 11 required deliverables. l The most critical are: Ø Link-Node Diagrams. Ø Lane Schematics. Ø QA/QC Sheets. Ø O-D Matrixes. Ø Balanced Traffic Demand Dataset. Ø MOE Tables.

The Freeway Lane Schematic l l Graphical representation of freeway made modeling results easier to understand. Color is used to highlight congested sections.

Design Selection l l l Typically several designs developed for a freeway corridor. 2, 3, or 4 design options are tested using microsimulation to determine best option. Design Options Ø TH 610 at I-94 § Ø Partial Build vs. Full Build TH 169 at I-494 § Ring Road System (3 designs)

Design Selection l Interchange Type Ø I-494 at Lyndale Ave. § l Traffic Control Ø TH 610 at Zachary Lane § l Single Point vs. Tight Diamond Signals vs. Roundabouts Collector-Distributor Roads Ø I-35 E at CSAH 14 § Connect SB entry ramps to CD Road or Interstate

Tweaking the Design l Sometimes the accepted design needs a little help. l Auxiliary Lanes Ø I-35 at CSAH 70 § l Auxiliary Lane Between CSAH 70 and CSAH 60 Turn Bays Ø TH 62 at I-494 § Dual Left vs. Triple Left

Freeways Modeled To Date l Ø Ø Ø Ø 210 miles of freeway modeled including: 40 miles of I-35 W 31 miles of I-494 28 miles of I-94 16 miles of I-694 14 miles of I-35 E 10 miles of I-35 10 miles of I-394

Modeling Website l l l Advanced CORSIM Manual Freeway Modeling Workshop Presentations Modeling Resource Materials FHWA Traffic Analysis Toolbox Link to Mn. DOT Data Extraction Tools Link to Mn. DOT Turning Movement Information http: //www. dot. state. mn. us/trafficeng/modeling/index. html

Thank You