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
Signalized Intersection Tools
- Critical Rate Calculator (XLS): The calculator performs crash rate analysis and identifies priority intersections or segments for further safety analysis. For information on how to use this spreadsheet, see Chapter 4 of APM Version 2.
- Excess Proportion of Specific Crash Types Calculator (XLS): The tool performs statistical analysis to calculate a probability of specific crash types exceeding a threshold proportion. For information on how to use and interpret this spreadsheet, see the instructions packaged with the spreadsheet and Chapter 4 of the APM) Version 2.
Volume Development Tools
- Saturation Flow Rate Calculator (XLS): The tool uses the Highway Capacity Manual 2010 method for calculating saturation flow rates from field data. For information on how to use this spreadsheet, see Chapter 3 of APM Version 2.
- Signal Progression Calculator (XLS): 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 APM.
- Synchro.SimTraffic.Templates.zip (DOCX): The files were created as a tool to both save time and reduce errors when starting Synchro analysis. All parameters are set following ODOT’s Synchro/SimTraffic settings provided in Chapters 7 and 8 of the APM. 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.
Unsignalized Intersection Tools
- Heavy Vehicle Pavement Design Spreadsheet (XLS): This tool is used to calculate future heavy vehicle volumes for pavement design. See Chapter 6 of the APM for information on how to use this spreadsheet.
- TruckSum (XLS): This tool is used to process ODOT-counted 12-hour or greater counts. For information on how to use this spreadsheet, see Chapter 11 of the APM.
Multimodal Analysis Tools
- Preliminary Traffic Signal Warrant Analysis Form (XLS): 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 APM.
- Single Lane Roundabout Calculator (XLSM): 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 data. Chapter 7 of the APM Version 1 provides procedures for roundabout analysis.
- Two-Way STOP Controlled Intersection Calculator (XLS): This tool is 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 APM.
- Simplified MMLOS Calculator (XLS): This tool implements streamlined segment-level pedestrian, bicycle and transit analysis methodologies based on the Highway Capacity Manual 2010. For more information see Chapter 14 of the APM Version 2.
- Shared Path Calculator (XLSM): This tool implements the Highway Capacity Manual 2010 Chapter 23 method shared path methodology for pedestrian and bicyclists. For more information see Chapter 14 of the APM Version 2.
Oregon Modeling Improvement Program (OMIP)
In 1994 ODOT launched the Oregon Modeling Improvement Program (OMIP). This effort included developing computer models to predict statewide, regional and urban transportation issues and produce comprehensive evaluations of proposed policies, plans and projects.
Urban Travel Demand Models
Travel demand models are used for transportation project development, transportation planning and land use planning. To request a model run please use the Request for Travel Demand Model Run Form (DOC).
(Click on the map to enlarge)
Land Use Models
Other Modeling Tools
- Statewide Integrated Model: A long range policy planning tool characterizing the dynamic interaction between Oregon's economy, land use and transportation systems.
- GreenSTEP: A strategic planning model that estimates the effects of a large variety of policies and external influences on household vehicle travel and associated energy consumption and greenhouse gas emissions.
- Highway Economic Requirements System (HERS-ST): 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.
- Greenhouse Gas Emissions Reduction Toolkit: This tool is designed to help local jurisdictions identify and explore the kinds of actions and programs they can undertake to reduce vehicle emissions as well as meet other community goals.
- R Resources
Disclaimer and Limitation of Liability
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.