Hennepin County Transportation Systems Plan HCTSP Traffic Forecasting

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Hennepin County Transportation Systems Plan (HC-TSP) Traffic Forecasting Model

Hennepin County Transportation Systems Plan (HC-TSP) Traffic Forecasting Model

Background Ø Ø Model initially developed in 1997 -98 Derived from Met Council Regional

Background Ø Ø Model initially developed in 1997 -98 Derived from Met Council Regional Model Minor Updates in 2000 & 2002 Conversion from TRANPLAN / Trans. Pro to Trans. CAD begun in 2004

Model Features Ø Ø Ø Land Use Based (sq-ft, Dwelling Units, etc. ) –

Model Features Ø Ø Ø Land Use Based (sq-ft, Dwelling Units, etc. ) – linked to Countywide parcel database Strong GIS Linkage (Arc. GIS) Only Vehicle Trips Modeled 3 -Purposes for Trip Productions / Attractions (HBW, HBO, NHB) Trip Generation via ITE trip rates

Model Characteristics Ø To accurately depict Arterials – must model one level below (to

Model Characteristics Ø To accurately depict Arterials – must model one level below (to collector street level) – this requires 50% increase in nodes / links

Model Characteristics Ø Huge databases to manage (parcel database 350, 000+ records)

Model Characteristics Ø Huge databases to manage (parcel database 350, 000+ records)

Model Characteristics Ø Met Council TAZ’s split about 3: 1 500 Met Council TAZ

Model Characteristics Ø Met Council TAZ’s split about 3: 1 500 Met Council TAZ -> 1, 500 HC TAZ

Model Characteristics Ø High level of ADT calibration

Model Characteristics Ø High level of ADT calibration

Why Trans. CAD ? Ø Ø Some previous familiarity with the package – had

Why Trans. CAD ? Ø Ø Some previous familiarity with the package – had dabbled with Demo copy in 2003 -04 Local Road Research Board Project in 2004 – Snowplow routing (2 licenses purchased) Package had ITE Trip Generation built-in Good GIS compatibility with Arc. View

Status of Model Refinements Ø Ø Ø Existing Land Use verification completed (required 1

Status of Model Refinements Ø Ø Ø Existing Land Use verification completed (required 1 -1/2 year effort) TAZ’s refined – parcels allocated to both Met Council and Hennepin County TAZ’s First attempt for existing trip generation completed

Schedule

Schedule

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Hennepin West Consortium Hennepin Technical College Brooklyn CenterHennepin West Consortium Hennepin Technical College Brooklyn Center
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Traffic Engineering Traffic Control Devices Traffic Control TrafficTraffic Engineering Traffic Control Devices Traffic Control Traffic
Traffic Signs Transportation Systems Engineering 20080821 Traffic SignsTraffic Signs Transportation Systems Engineering 20080821 Traffic Signs
Traffic Rotaries Transportation Systems Engineering Traffic Rotaries IntroductionTraffic Rotaries Transportation Systems Engineering Traffic Rotaries Introduction
Traffic Intersections Transportation Systems Engineering Traffic Intersections IntroductionTraffic Intersections Transportation Systems Engineering Traffic Intersections Introduction
Traffic signal design Transportation Systems Engineering 20090902 TrafficTraffic signal design Transportation Systems Engineering 20090902 Traffic
Traffic stream models Transportation Systems Engineering TVMIITB20080814 TrafficTraffic stream models Transportation Systems Engineering TVMIITB20080814 Traffic
Traffic data collection Transportation Systems Engineering 20080813 TrafficTraffic data collection Transportation Systems Engineering 20080813 Traffic
Introduction Definition Forecasting Technology Technological Forecasting Process ForecastingIntroduction Definition Forecasting Technology Technological Forecasting Process Forecasting