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Technical Tools

Analysis Tools

The Analysis Procedures Manual (APM) provides the current methodologies, practices and procedures for conducting long term analysis of Oregon Department of Transportation (ODOT) plans and projects.

Safety Analysis Tools
  • Critical Rate Calculator
    Critical Rate Calculator - This Excel spreadsheet implements the Highway Safety Manual Critical Rate network screening methodology. The user enters crash totals, AADT and other data within a study area. The calculator performs crash rate analysis and identifies priority intersections or segments for further safety analysis. In addition, the calculator identifies when the reference population size is insufficient and therefore intersection crash rates must be compared to the statewide 90th percentile crash rates in APM Exhibit 4-1, and flags intersections with crash rates exceeding those values. For information on how to use this spreadsheet, see Chapter 4 of Analysis Procedures Manual (APM) Version 2.
  • Excess Proportion of Specific Crash Types Calculator
    Excess Proportion of Specific Crash Types Calculator - This Excel spreadsheet is an ODOT adaptation of the Highway Safety Manual Part B Excess Proportion of Specific Crash Types network screening methodology. The user inputs ODOT crash data within a study area. The tool performs statistical analysis to calculate a probability of specific crash types exceeding a threshold proportion. Then it identifies intersections with an excess proportion of specific crash types. For information on how to use and interpret this spreadsheet, see the instructions packaged with the spreadsheet and Chapter 4 of the Analysis Procedures Manual (APM) Version 2.
Signalized Intersection Tools
  • Saturation Flow Rate Calculator
    Saturation Flow Rate Calculator - This Excel spreadsheet implements the Highway Capacity Manual 2010 method for calculating saturation flow rates from field data. For information on saturation flow rate field data collection and how to use this spreadsheet, see Chapter 3 of Analysis Procedures Manual (APM) Version 2.
  • Signal Progression Calculator
    Signal Progression Calculator - The Signal Progression Calculator is an Excel spreadsheet intended for use in project development as a preliminary estimate of bandwidth adequacy. The tool estimates the minimum required progression bandwidth for a signalized system based on volumes at the critical intersection. For information on how to use this spreadsheet, see Chapter 10 of the Analysis Procedures Manual (APM).
  • Synchro/SimTraffic Version 8
    Synchro.SimTraffic.Templates.zip - The Synchro/SimTraffic Template Files were created as a tool to both save time and reduce errors when starting Synchro analysis. This is only a starting point, as there are numerous other changes that need to be made on a case by case basis. All parameters are set following ODOT’s Synchro/SimTraffic settings provided in the Analysis Procedures Manual (APM) Chapters 7 and 8. The parameters that were updated reflect only those that are global (apply to the network as a whole). For additional information on how to use the template files and the changes that were made, refer to the README document that is included in the zip file.
Volume Development Tools
  • Heavy Vehicle Pavement Design Spreadsheet
    The Heavy Vehicle Pavement Design Spreadsheet is used to calculate future heavy vehicle volumes for pavement design. The spreadsheet contains both scoping-level and project-level methods. See Chapter 6 of the APM for information on how to use this spreadsheet.
  • TruckSum Spreadsheet
    The TruckSum Spreadsheet is used to process ODOT-counted 12-hour or greater counts. These counts are provided in electronic form in "TruckSum" format from the Transportation Systems Monitoring Unit. For information on how to use this spreadsheet, see Chapter 11 of the Analysis Procedures Manual (APM).
Unsignalized Intersection Tools
  • Preliminary Traffic Signal Warrants
    Preliminary Traffic Signal Warrant Analysis Form (Excel calculator version) - This tool may be used to assist in preparing the preliminary traffic signal warrant PSW form. For guidance on preliminary signal warrant analysis, see Chapter 7 of the Analysis Procedures Manual (APM).
  • Single Lane Roundabout Calculator
    The Single Lane Roundabout Calculator employs HCM 2010 methodology. For each approach, the roundabout calculator produces conflict flow, entry flow, capacity, pedestrian impedance factor, v/c ratio, control delay, Level Of Service (LOS), and 95th percentile queue. Intersection delay and LOS are also calculated. Tabs are in order of use: notes, inputs, single lane, bypass lane, 2nd bypass lane, 3rd bypass lane, and 4th bypass lane. The Analysis Procedures Manual version 1 provides procedures for roundabout analysis in Chapter 7.
  • Queue Length Estimation at Two-Way STOP Controlled Intersection Calculator
    The Two-Way STOP Controlled Intersection Calculator is an Excel spreadsheet intended for use in facilitating the Queue Length Estimation at Two-Way STOP Controlled Intersection analysis methodology. For more information on the use of this tool, see Chapter 11 of the Analysis Procedures Manual (APM).
Multimodal Analysis Tools
  • Simplified MMLOS Calculator
    Simplified MMLOS Calculator - This excel spreadsheet implements streamlined segment-level pedestrian, bicycle and transit analysis methodologies based on the Highway Capacity Manual 2010. For more information on the multimodal methodologies and the inputs into the calculator, see Chapter 14 of the Analysis Procedures Manual (APM) Version 2.
  • Shared Path Calculator
    Shared Path Calculator - This Excel spreadsheet implements the Highway Capacity Manual 2010 Chapter 23 method shared path methodology for pedestrian and bicyclists. For more information on the use and inputs for the tool please see Chapter 14 of the Analysis Procedures Manual (APM) Version 2.
 

Modeling Tools

Oregon Modeling Improvement Program

In 1994 the Oregon Department of Transportation launched the Oregon Modeling Improvement Program. This effort included developing computer models to predict wide-ranging effects of transportation, land use and economic changes. The work is coordinated with the Metropolitan Planning Organizations (MPOs) and other state agencies through the Oregon Modeling Steering Committee. The models evaluate statewide, regional and urban transportation issues to produce comprehensive evaluations of proposed policies, plans and projects.

Urban Travel Demand Models

To request a model run please use the Model Request Form.

Travel Demand Model Map
(Click on the map to enlarge)

Statewide

Statewide models are long range planning tools designed to evaluate conditions under various circumstances related to transportation, land use, economic factors and public policy.

  • Statewide Integrated Model - a long range policy planning tool characterizing the dynamic interaction between Oregon's economy, land use and transportation systems.
  • GreenSTEP is a strategic planning model that estimates the effects of a large variety of policies and external influences such as fuel prices on household vehicle travel and associated energy consumption and greenhouse gas emissions.
  • Highway Economic Requirements System (HERS-ST) is used to support needs analysis for the Congestion Management System (CMS), as well as numerous other studies such as the Oregon Highway Plan, local corridor studies and system plans.
Land Use Models Other Modeling Tools
 

Disclaimer and Limitation of Liability

DISCLAIMER

Software and manuals are distributed "as is" without warranty of any kind, either express or implied, including, but not limited to the implied warranties of merchantability, fitness for a particular purpose, and non-infringement. The entire risk as to the quality and performance of this program is with you. You are advised to test the program thoroughly before you rely on it. Should the program prove defective, you (and not the Oregon Department of Transportation or the State of Oregon) assume the entire cost of all necessary servicing, repair or correction.

LIMITATION OF LIABILITY

In no event shall the Oregon Department of Transportation be liable for any claim, damages or other liability whether direct, indirect, incidental, special or consequential damages, or damages for loss of profits, revenue, data or use, whether in an action in contract or tort, arising out of your use of the software or manuals.