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Discussion Forum

This area is intended for interaction among HCM2010 users to exchange information and ideas on applying HCM2010 procedures. When issues rise to the level that requires formal response from the TRB Highway Capacity and Quality of Service (HCQS) Committee, they should be submitted for Interpretation Request.

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General Discussion (19 posts)

General questions, applications, and questions regarding the HCM2010

Railroad Crossings
18 days ago
by David G LeBreton, Jr.
Questions & Clarifications (12 posts)

Having trouble with something in the HCM2010? Need further information to clarify a position? Conversations here will help create the ongoing errata for the manual found in the Interpretations page on this website.

Two-Way Stop Control Potential Capacity with Upstream Signal
6 days ago
by Jeanne Bowie
Technical Support (14 posts)

Run into problems with the website? Have a suggestion? Let us know here!

Live help
5 months ago
by Dale Dimick

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