HCM-CALC

Latest Release Notes


Current Release Version Date: October 2020

The revisions from the previous version (April 2019) include the following:

Two-lane Highway Facility module

1) Since the new two-lane highway methodology developed from NCHRP Project 17-65 is now officially included in the HCM, this module is now considered official and thus the 'prototype' information screen has been removed from the module. The superseded two-lane highway segment module remains for now, but will eventually be deprecated.

2) Updates to the file creation utility for the SwashSim microscopic traffic simulation program

Freeway Facility module

1) Updates to the file creation utility for the SwashSim microscopic traffic simulation program

On-/Off-Ramp Segments modules

1) Addition of ramp roadway v/c ratio limit check for service volume calculations

2) Revised footnote labels for service volumes (in service volumes screen and formatted report)

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