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Analysis Procedures Manual

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

A major update of the manual is currently in progress. APM version 2 will incorporate methodologies from sources such as the 2010 Highway Capacity Manual and the Highway Safety Manual. As new chapters or sections of APM version 2 are completed, they will be published on this webpage, and APM version 1 will be modified to refer to the version 2 procedures.

The APM does not establish any accepted or preferred software. Any analysis software is acceptable as long as it is consistent with the current APM and Highway Capacity Manual.

APM Version 1

Analysis Procedures Manual Version 1 - All chapters - 4MB

APM Version 2 (In Progress)

Analysis Procedures Manual Version 2 - All Chapters - 20MB


Chapter 1 Chapter 2 - Scoping Projects Chapter 3 - Transportation System Inventory Chapter 4 - Safety

Chapter 5 - Developing Existing Year Volumes

Chapter 6 - Future Year Forecasting

Chapter 7 - System Planning Analysis

Chapter 8 - Mesoscopic Analysis

Chapter 9 - Performance Measures - Not yet complete

Chapter 10 - Analyzing Alternatives

Chapter 11 - Segment Analysis - Not yet complete Chapter 12 - Unsignalized Intersection Analysis - Not yet complete Chapter 13 - Signalized Intersection Analysis - Not yet complete

Chapter 14 - Multimodal Analysis

Chapter 15 - Traffic Simulation Models - Not yet complete Chapter 16 - Environmental Traffic Data - Not yet complete Chapter 17 - Travel Demand Modeling - Not yet complete Chapter 18 - Operational Analysis Chapter 19 - Traffic Analysis Documentation - Not yet complete


Abbreviations and Acronyms

The following reference papers and reports are provided for informational purposes only regarding how procedures were developed. Always use the latest version of the Analysis Procedure Manual, or APM, for current procedures.

The Analysis Procedures Manual User Group, or APMUG, is open to all interested parties either internal or external to ODOT. For information on APMUG, see the Analysis Procedures Manual User Group Guidelines. If you are interested in joining the group, contact  APM.

APMUG meetings are generally held quarterly, on the second Wednesday of January, April, July and October.

Related Technical Data

The Future Volume, ATR Characteristic and Seasonal Trend Tables contain traffic volume related data which is updated annually. This data is intended for use in developing existing and future volumes and described in the APM version 2, Chapters 5 and 6.

​The 2035 Future Highway Volume Table is created using data from the Transportation Volume Tables, or TVT, which are maintained by the Transportation Systems Monitoring Unit's Traffic Counting Program. For information on how to use this table, see Section 5.5 of the Analysis Procedures Manual.

Note: The future volumes are estimates only and local growth patterns and comprehensive plans may affect the actual outcome. The growth rates calculated from the Future Volumes Table are only a beginning point of estimating future volumes. Engineering judgment needs to be applied to the numbers.

​The Automatic Traffic Recorder, or ATR, Characteristic Table can be used to estimate seasonal traffic count adjustments. For information on how to use this table, see Section 5.4.2 of the Analysis Procedures Manual.

The ATR Characteristic Map is web based mapping tool that displays ATR’s based on their characteristic trend. Detailed information can be displayed on the map by clicking on ATR symbols. The ATR Characteristic Table and map are updated on a yearly basis, typically in September.

​The Seasonal Trend Table can also be used to estimate seasonal traffic count adjustments. The Seasonal Factor Table is updated on a yearly basis, typically in September. Season Trend Table factors are calculated using the previous full year of ATR data. For information on how to use this table, see Section 5.4.4 of the Analysis Procedures Manual.




The APM has been updated. Please see the September 2017 Change Sheet for what has changed.

Next APM User Group Meeting

Date: Wednesday, October 11, 2017
Location: Online Webinar
Start time: 9:00 a.m.
End time: 12:00 noon (approximate)

Please submit any suggestions for agenda topics or presenters to  APM.

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