IN.gov - Skip Navigation

Note: This message is displayed if (1) your browser is not standards-compliant or (2) you have you disabled CSS. Read our Policies for more information.

Amber Alert
Amber Alert - TEST
  • INDOT_roadmapWidget3
  • trafficwise_widget
  • report_concern_widget

Indiana Department of Transportation

INDOT > Resources > STIP & ARRA Documents > 2013-2035 Future Transportation Needs Report > Transportation Modeling Transportation Modeling

A major component of transportation planning is the ability to analyze system conditions, performance, and test various improvement alternatives using predictive modeling application. Transportation modeling uses state-of-the-art analysis tools to support critical transportation planning and major capital investments decision making.

Transportation models, to the most extent possible, are used to replicate the “real world” in terms of environmental impacts; system performance; and agency operation impacts. Transportation modIntelligen compactionels are also used to predict changes in travel patterns and the utilization of the transportation system in response to changes in regional development, demographics, and transportation supply. Transportation modeling is a challenging task, but one that is required for rational planning and evaluation of transportation systems.

The Modeling Team utilizes various planning analysis tools that support various capital management programs, asset management and investment decisions. The Technical Modeling Team consists of a multi-disciplinary team of engineers, planners, computer programmers, and transportation professionals. The Modeling Section provides technical modeling needs analysis and support to our various customers:

  • Asset Managers
  • Transportation Planning Staff
  • Production & Project Managers
  • Feasibility & Design Engineers
  • Contract Consultants
  • Metropolitan Planning Organizations
  • Regional Planning Organizations
  • Federal Agencies
  • Neighboring State DOTs

Production Information

Emissions Modeling – The Technical Modeling Team is responsible for conducting emissions analysis as part of federally mandated air quality conformity regulations. Our office is responsible for rural areas designated as non-attainment areas by the U.S. Environmental Protection Agency. As part of the process, INDOT staff work closely with the Indiana Department of Environmental Management, U.S. Environmental Protection Agency, INDOT District Offices, Metropolitan Planning Organizations, Regional Planning Organizations, the U.S. Army Corp of Engineers, county officials, and others partners to determine:

  • State Implementation Plans – Air quality conformity budgets
  • Evaluate proposed INDOT improvements relative to air quality conformity
  • Determine transportation generated pollutant levels: ozone, Carbon Dioxide and Particulate Matters (PM 2.5)

Travel Demand Modeling – The Technical Modeling Team is responsible for the development and maintenance of the department’s Statewide Travel Demand Model (STDM). The model is used to predict changes in travel patterns and the utilization of the transportation system in response to changes in regional developments (new/wider roads, new buildings, shopping malls, large industries); changes in the land use (such as more residential developments or new industrial sites); changing demographics (more or less people in a specific area or more residents driving) and transportation supply.

TransCAD has been chosen as INDOT’s modeling software package. The software transportation package integrates the modeling algorithm with a Geographical Information System which offers a number of productivity and accuracy benefits. The STDM is used for: Systems level performance analysis; new corridor alternative analysis; input into other planning/modeling tools; long range planning analysis; initial origin-destination project studies; and project scoring and evaluation exercises.

Simulation Modeling – The Technical Modeling Team provides real-time (planning level) traffic simulations in 2-D and 3-D formats. Simulation models allow the testing of various improvement strategies such as: interchange modification, ramp metering, HOT lanes, intersection improvements, roundabouts, and can simulate emergency road/lane closures. INDOT has chosen TransModeler as its simulation package which integrates with our TransCAD statewide travel demand. The modeling package is also unique in that it performs dynamic traffic assignment. This allows for more realistic traffic assignment which allows vehicles to divert to other routes during extreme congestion, road, and lane.

Contact Information

Jay Mitchell
Transportation Planner
Indiana Department of Transportation
100 N. Sente Ave., IGCN 955
Indianapolis, IN 46204
317-233-4713
jmitchell@indot.in.gov

Greg Katter, PE
Division Engineer
Indiana Department of Transportation
100 N. Senate Ave., IGCN 955
Indianapolis, IN 46204
317-232-6779
gkatter@indot.in.gov

Kory Chu
Modeling Engineer
Indiana Department of Transportation
100 N. Senate Ave., IGCN 955
Indianapolis, IN 46204
317-234-5124
kchu@indot.in.gov

Sara Ornelas
Modeling Engineer
Indiana Department of Transportation
100 N. Senate Ave., IGCN 955
Indianapolis, IN 46204
317-234-8247
sornelas@indot.in.gov

Geraldine Lampley
Certified Traffic Forecast Technician & Modeling Assistant
Indiana Department of Transportation
100 N. Senate Ave., IGCN 955
Indianapolis, IN 46204
317-233-1061
Glampley@indot.in.gov