Current events

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March 24, 2017 - The IHSDM - HSM Predictive Method 2016 Release Update (version 12.1.0; March 24, 2017) is available for downloading. The Update includes revisions to the Policy Review Module (PRM) to reflect revised controlling criteria for the design of projects on the National Highway System (NHS), published by FHWA in May 2016.


November 15-16, 2016 - A 2-day, on-site IHSDM training course will be conducted by FHWA in Phoenix, AZ, hosted by the Arizona DOT.


October 26-27, 2016 - A 2-day, on-site IHSDM training course was conducted by FHWA in Newington, CT, hosted by the Connecticut DOT.


October 20, 2016 - FHWA hosted a Data-Driven Safety Analysis (DDSA) webinar on the IHSDM - HSM Predictive Method 2016 Release. A recording of the webinar can be found here. The webinar showcased the newest IHSDM capabilities, focusing on how the tool’s Crash Prediction Module (CPM) can be used to apply HSM Part C predictive methods for:

  • Two-lane and multi-lane rural highways
  • Urban and suburban arterials
  • Freeway segments
  • Freeway ramps and interchanges

Presentation slides from the webinar can be accessed from the IHSDM 2016 Web Conference page.


October 5, 2016 - An on-site IHSDM training course was conducted by FHWA in Columbia, SC, hosted by the South Carolina DOT.


September 28, 2016 - The IHSDM - HSM Predictive Method 2016 Release (version 12.0.0; September 28, 2016) is available for downloading. The 2016 Release expands the IHSDM Crash Prediction Module (CPM) by implementing draft Highway Safety Manual (HSM) crash predictive methods for 6+ lane and 1-way urban/suburban arterials, developed under NCHRP Project 17-58.


April 27-28, 2016 - A 2-day, on-site IHSDM training course was conducted by FHWA in Lansing, MI, hosted by the Michigan DOT.


March 11, 2016 - The IHSDM - HSM Predictive Method 2015 Release Update (version 11.1.0; March 11, 2016) is available for downloading. The Update includes a new Crash Modification Factors (CMF) Report, as part of the Crash Prediction Module output. In addition, the 2015 Release Update contains enhancements to the Policy Review Module (PRM), including new policy checks for Bike Lane Width on rural 2-lane highways and Stopping Sight Distance and Decision Sight Distance on rural multilane highways.


March 11, 2016 - FHWA hosted a web conference on the IHSDM - HSM Predictive Method 2015 Release for the Alabama DOT.


October 22, 2015 - FHWA hosted a Web Conference on the new IHSDM 2015 Release (IHSDM 2015 Web Conference), focusing on major enhancements to the Policy Review Module (PRM), which was expanded to include policy checks for rural multilane highways.


September 30, 2015 - The IHSDM - HSM Predictive Method 2015 Release (version 11.0.0; September 30, 2015) is available for downloading. In addition to crash prediction capabilities which implement Highway Safety Manual (HSM) Part C predictive methods, the 2015 Release includes major enhancements to the Policy Review Module (PRM), which was expanded to include policy checks for rural multilane highways.


March 4, 2015 - The IHSDM - HSM Predictive Method 2014 Release Update (version 10.1.0; March 4, 2015) is available for downloading. The 2014 Release Update contains enhancements to the Freeway Ramps/Interchanges Crash Prediction Method, including:

  • Interchange-level Evaluations. All ramps, C-D roads and ramp terminals associated with an Interchange can now be evaluated with a single Evaluation.
  • Empirical-Bayes (EB) Analysis is now functional for Freeway Ramp Terminals, for both station-based and site-based analyses.
  • Breakdowns of expected crashes by severity level and crash type were added to “site-based” analysis Evaluation Reports.


November 5, 2014 - FHWA hosted a web conference on the IHSDM - HSM Predictive Method 2014 Release for the Pennsylvania DOT and its business partners, focusing on how IHSDM can be used to better analyze the safety effects of interchange access requests. The FHWA Pennsylvania Division Office will work with PennDOT to determine the next steps towards implementing the use of IHSDM to evaluate the safety performance of proposed interchange alternatives and designs.


October 2, 2014 - FHWA hosted a web conference on the IHSDM - HSM Predictive Method 2014 Release, focusing on the major enhancements/additions, including: Extension of Crash Prediction Module (CPM) Site-Based Data Input and Analysis capabilities to freeway ramps, collector-distributor (C-D) roads and ramp terminals; and extension of the IHSDM Calibration Utility to freeway ramps, C-D roads, and ramp terminals. A recording of the web conference is available, as well as a pdf version of the presentation slides.


September 9, 2014 - The IHSDM - HSM Predictive Method 2014 Release (version 10.0.0; September 2014) is now available for downloading. In addition to existing crash prediction capabilities which implement Highway Safety Manual (HSM) Part C predictive methods, the 2014 Release contains further enhancements to the Freeway Ramps/Interchanges Crash Prediction Method, including extension of Crash Prediction Module (CPM) Site-Based Data Input and Analysis capabilities to freeway ramps, collector-distributor (C-D) roads and ramp terminals; and extension of the IHSDM Calibration Utility to freeway ramps, C-D roads, and ramp terminals.


February 9, 2014 - The IHSDM - HSM Predictive Method 2013 Release Update (version 9.1.0; February 9, 2014) is available for downloading. The 2013 Release Update contains enhancements to the Freeway Segment and Freeway Ramps/Interchanges Crash Prediction Method, including: “Site-based data input and analysis” for freeway segments; a “Project-level” Empirical-Bayes (EB) process for freeway segments, ramps and C-D roads; and enhanced Evaluation Reports that now include crash severity distribution tables (breakdown by K, A, B, C, O) for Freeway Segments and Freeway Interchange Components.


October 24, 2013 - FHWA hosted a web conference on the IHSDM - HSM Predictive Method 2013 Release, focusing on the major enhancements/additions, including: crash prediction capabilities for freeway ramps/interchanges (including ramp segments, collector-distributor (C-D) roads, and ramp terminals) based on draft HSM Chapter 19 materials developed under NCHRP Project 17-45. A recording of the web conference is available. The IHSDM - HSM Predictive Method 2013 Release presentation can be accessed here.


September 30, 2013 - The IHSDM - HSM Predictive Method 2013 Release (version 9.0.0; September 30, 2013) is available for downloading. The 2013 Release includes a Beta version of crash prediction capabilities for freeway ramps/interchanges (including ramps, C-D roads and ramp terminals) based on draft HSM Part C materials developed under NCHRP Project 17-45.


July 17, 2013 - FHWA conducted a half-day IHSDM Crash Prediction Module (CPM) Workshop at the ITE 2013 Western District Annual Meeting, in Phoenix, AZ. The Workshop agenda can be accessed here; a PowerPoint presentation used in the Workshop can be accessed here; instructions for hands-on exercises can be accessed here.


June 18, 2013 - FHWA conducted a half-day IHSDM Crash Prediction Module (CPM) Workshop in Carson City, NV, hosted by the Nevada DOT. A PowerPoint presentation used in the Workshop can be accessed here; instructions for hands-on exercises can be accessed here.


February 14, 2013 - An Update to the IHSDM - HSM Predictive Method 2012 Release (version 8.1.0; February 14, 2013) is available. The 2012 Release Update includes a "Calibrate Using Site Data" option for calculating Freeway Segment Calibration Factors, which are then used in IHSDM Crash Prediction Module evaluations. An IHSDM Calibration Utility has been available for other facility types (rural 2-lane and rural multilane highways, and urban/suburban arterials) via the IHSDM Administration Tool since 2011, to assist agencies in implementing the calibration procedures described in the Appendix to Part C of AASHTO’s Highway Safety Manual (HSM).


October 28, 2012 - An IHSDM Workshop was held at the 38th International Forum on Traffic Records & Highway Information Systems and ATSIP Meetings, in Biloxi, MS. A Powerpoint presentation used in the workshop can be accessed here.


October 22-23, 2012 - A 2-day, on-site IHSDM training course was conducted in Phoenix, AZ, hosted by the Arizona DOT.


October 16, 2012 - A Web Conference was held on the new IHSDM 2012 Release (IHSDM 2012 Release Web Conference), focusing on the major enhancements/additions, including: a Beta version of crash prediction capabilities for mainline freeway segments based on draft HSM materials developed under NCHRP Project 17-45; and a new site-based data input and analysis capability for crash prediction.


August 28, 2012 - A presentation on the IHSDM Crash Prediction Module (CPM) Calibration Utility was given at the Highway Safety Manual (HSM) Lead States Peer Exchange in Baltimore, MD.


September 27, 2012 - The IHSDM - HSM Predictive Method 2012 Release (version 8.0.0, September 27, 2012) is available for downloading. This Release includes six evaluation modules: Crash Prediction, Policy Review, Design Consistency, Traffic Analysis, Driver/Vehicle and Intersection Review. The 2012 Release includes the following major enhancements: a Beta version of crash prediction capabilities for mainline freeway segments based on draft HSM materials developed under NCHRP Project 17-45; and a new site-based data input and analysis capability for crash prediction that provides users with more flexibility in how data are entered.


August 2012 - An IHSDM hands-on workshop (focused on use of IHSDM to implement HSM Part C predictive methods)was conducted as part of an HSM Training workshop at the ITE Annual Meeting in Atlanta, GA.


May 9-10, 2012 - A 2-day, on-site IHSDM training course was conducted in Baton Rouge, LA, hosted by the Louisiana DOTD.


March 14, 2012 - An Update to the IHSDM - HSM Predictive Method 2011 Release (version 7.0.1; March 14, 2012) is available. 2011 AASHTO “Green Book” policies for rural two-lane highways (for both U.S. Customary and Metric units) were added in the IHSDM Administration Tool for use in applicable IHSDM modules (i.e., Policy Review, Crash Prediction, and Intersection Review Modules).


October 19, 2011 - A Web Conference was held on the new IHSDM 2011 Release (IHSDM 2011 Release Web Conference), focusing on the major enhancements/additions, including: a new Crash Prediction Module (CPM) Calibration Utility and the redesigned Intersection Editor.


September 29, 2011 - The IHSDM - HSM Predictive Method 2011 Release (version 7.0.0, September 29, 2011) is available for downloading. This Release includes six evaluation modules: Crash Prediction, Policy Review, Design Consistency, Traffic Analysis, Driver/Vehicle and Intersection Review. For the 2011 Release, a Calibration Utility was added to the IHSDM Administration Tool, to assist agencies in implementing the calibration procedures described in the Appendix to Part C of AASHTO's Highway Safety Manual (HSM), and applied via the IHSDM Crash Prediction Module. The IHSDM Tutorial was expanded to include a lesson on the new Calibration Utility. In addition, the Intersection Editor was redesigned to help users enter, edit and organize their intersection data.


March 17, 2011 - A Web Conference was held for the New Hampshire DOT (IHSDM 2010 Web Conference for NHDOT).


January 13, 2011 - An Update (version 6.0.2, January 13, 2011) to the IHSDM - HSM Predictive Method 2010 Release is available for downloading. Features in several evaluation modules, the graphical user interface, Highway Viewer, and output / reporting capabilities have all been improved in the Update. (Existing registered users, follow the “Download Login” link to access this update. New users, click on the “Download Registration” link.)


July 15, 2010 - The IHSDM - HSM Predictive Method 2010 Release (version 6.0.0, July 15, 2010) is available for downloading. This Release includes six evaluation modules: Crash Prediction, Policy Review, Design Consistency, Traffic Analysis, Driver/Vehicle and Intersection Review. To the extent possible, the Crash Prediction Module (CPM) faithfully implements Part C (Predictive Method) of AASHTO's 1st Edition Highway Safety Manual (June 2010) for evaluating rural 2-lane highways, rural multilane highways and urban/suburban arterials. The Design Consistency Module (DCM) has been extended to apply to both lower-speed (posted speed 25 to 40 mph) and higher-speed (posted speed greater than 40 mph) highways. Reporting capabilities were enhanced significantly and the Tutorial was expanded to include Lessons on Data Entry and Output/Reporting, and an expanded Crash Prediction Module Lesson (which now includes exercises for rural two-lane and rural multilane highways, and an urban arterial).


June 2, 2010 - A Web Conference was held for FHWA Resource Center staff to provide an overview of IHSDM and the upcoming IHSDM 2010 Release (IHSDM 2010 Web Conference for Resource Center Staff).


May 19, 2010 - A Web Conference on the upcoming IHSDM 2010 Release was held (IHSDM 2010 Release Web Conference), focusing on the major enhancements/additions, including: the Crash Prediction Module -- intended to be a faithful software implementation of Part C (Predictive Methods) of AASHTO's Highway Safety Manual, which provides crash prediction methodologies for two-lane rural highways, multilane rural highways and urban/suburban arterials; an expanded Design Consistency Module, which now accommodates both low- and high-speed facilities; and enhanced reporting capabilities. An overview and status of the Highway Safety Manual (HSM) was also provided. The HSM is scheduled to be published by AASHTO in June 2010. The IHSDM 2010 Release will be made publicly available in conjunction with the publication of the HSM.


November 13, 2009 - An update to the IHSDM 2009 Crash Prediction Module (CPM) Beta Release (Version 5.3.1) is available for downloading. This update includes improvements/changes related to Highway Data and Output/Reporting, as well as defect corrections ("bug" fixes), as documented in the Release Notes. The most significant enhancements are to the Highway Editor, including the addition of "Data Generators" for vertical alignment, cross-slope and shoulder section data elements, to generate complete data elements when only summary data are available to the user.


September 18, 2009 - A Web Conference was held for the New York State Department of Transportation (IHSDM Web Conference for NYSDOT)


July 14, 2009 - The fifth IHSDM Web Conference (Crash Prediction Module for Highway Safety Manual Part C - Web Conference 5) was held.


June 30, 2009 - The IHSDM 2009 Crash Prediction Module (CPM) Beta Release (Version 5.3.0) is available for downloading. The 2009 CPM Beta Release includes an extended and updated Crash Prediction Module, intended to faithfully implement Part C of the Highway Safety Manual (Draft 3.1; April 2009). The crash prediction methodology for rural two-lane highways was updated to faithfully implement the predictive method documented in HSM Part C, Chapter 10, to the extent possible. Crash prediction methodologies for evaluating rural multilane highways and urban/suburban arterials were added, to faithfully implement - to the extent possible - the predictive methods documented in HSM Part C, Chapters 11 and 12, respectively. Significant enhancements were also made to: the graphical user interface (GUI), data, output/reporting, help/documentation, and the Administration Tool, as documented in Release Notes for the 2009 CPM Beta Release. To provide feedback to FHWA on the 2009 CPM Beta Release, complete the User Evaluation Form and e-mail it to IHSDM.Support@dot.gov. To provide feedback on your use of IHSDM, complete a Summary of Application Form and e-mail it to IHSDM.Support@dot.gov. For free technical support, e-mail IHSDM.Support@dot.gov or call 202-493-3407. For more information on the Highway Safety Manual, visit the HSM public website at www.highwaysafetymanual.org.


June 19, 2009 - A Web Conference was held for the Nebraska Department of Roads (IHSDM Web Conference for NDOR)


March 12, 2009 - The fourth IHSDM Web Conference (2008 IHSDM - Web Conference 4) was held. The focus was on application of IHSDM in Road Safety Audits (RSA), with three case study applications presented by practitioners.


October 15, 2008 - The IHSDM 2008 Public Release (Version 5.0.1) is now available for downloading. This update to IHSDM 5.0.0 corrects a defect which casued bookmarked results to only display Metric values. It also includes updates to the documentation.


October 8, 2008 - The third IHSDM Web Conference (2008 IHSDM - Web Conference 3) was held. The agenda included a presentation and demonstration of the IHSDM 2008 Public Release software, including the newly added Driver/Vehicle Module (DVM) and enhanced reporting capabilities. An IHSDM application case study was presented by Pennsylvania State University.


September 26, 2008 - The IHSDM 2008 Public Release (Version 5.0.0) is now available for downloading. The 2008 Public Release includes the addition of a fully-functioning beta version of a Driver/Vehicle Module (DVM), as well as significant enhancements to: output/reporting capabilities, the evaluation process/wizard, the graphical user interface (GUI), data handling, the Highway Editor, accessibility features, help/documentation, and the Administration Tool, as documented in Release Notes for the 2008 Public Release. To provide feedback to FHWA on the 2008 Release, complete the User Evaluation Form and e-mail it to IHSDM.Support@dot.gov. To provide feedback on your use of IHSDM, complete a Summary of Application Form and e-mail it to IHSDM.Support@dot.gov. For free technical support, e-mail IHSDM.Support@dot.gov or call 202-493-3407.


May 20, 2008 - The second IHSDM Web Conference (IHSDM 2007 - Web Conference 2) was held. The agenda included a presentation of the relationship of IHSDM to the Transportation Research Board's efforts to develop a Highway Safety Manual [1] (HSM), an overview and status of the HSM, and on-going NCHRP projects to extend Crash Prediction capabilities of the IHSDM to support HSM Prediction Methodologies. Data needs related to the IHSDM Crash Prediction Module and the HSM Prediction Methodologies were discussed, and an IHSDM application case study presented.


May 19, 2008 - The IHSDMDownload Wiki is now live.


March 7, 2008 - An update to the IHSDM 2007 Public Release is now available for downloading (patch1). The update (version 4.0.5, dated March 5, 2008) includes defect corrections related to LandXML data import processing. A complete list of corrections and enhancements for the update are documented in the Release Notes for the 2007 Public Release.

This update also includes a new version (1.6.0_04) of the Oracle Java Runtime Environment (JRE). The new JRE includes a significant number of improvements to the JRE. No patch IHSDM download is available.


February 14 and 19, 2008 - The first IHSDM Web Conference (IHSDM 2007 - Web Conference 1) was held. The primary topic was a presentation and demonstration of the IHSDM 2007 Public Release, with a case study to illustrate how this tool can be used to evaluate and improve the safety of a highway project.


December 18, 2007 - The IHSDM 2007 Public Release (Version 4.00) is now available for downloading. The 2007 Public Release includes significant enhancements to the Highway and Intersection Editors, user interface, evaluation process/wizard, output/reporting, help/documentation, Administration Tool, and system configuration, as documented in Release Notes for the 2007 Public Release. To provide feedback to FHWA on the 2007 Release, complete the User Evaluation Form and e-mail it to IHSDM.Support@dot.gov. To provide feedback on your use of IHSDM, complete a Summary of Application Form and e-mail it to IHSDM.Support@dot.gov. For free technical support, e-mail IHSDM.Support@dot.gov or call 202-493-3407.