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  • Disclaimer: Any opinions, findings, and recommendations expressed in the group area discussions are solely those of the authors and do not necessarily reflect the views of the United States Government, the Department of Transportation, or the Federal Highway Administration.
Edited: 4/24/2012 8:34 AM

CAL3QHC on Windows7

Recently CDOT has switched to Win7 on 64-bit platform. CAL3QHC products used for hotspt analyses no longer run. Has anyone had similar experience?
2012-02-22 14:17:30
Posted: 4/24/2012 8:34 AM
Ironic, I have no problem running TNM 2.5 with Win7 64-bit system, with exception of the contouring option which bombs during grid function. 
2/24/2012 1:13 PM
Posted: 4/24/2012 8:34 AM
Matt Jones
I was able to run Cal3QHCR under Windows 7 64 bit on an Intel i7 processor.  However, I haven't been able to get FHWA's TNM (Traffic Noise Model) to run on the same machine but have heard of people running it on a similar machine.  I was surprised that Cal3QHCR ran without re-compiling.
2/23/2012 2:23 PM
Posted: 4/24/2012 8:34 AM
J Schlaefer
Right now the immediate need is CAL3QHC.   I had been using the
CALView product but it too does not run.
2/23/2012 1:28 PM
Posted: 4/24/2012 8:34 AM
Michael Claggett
Yes and that may be a problem for a number of models and programs distributed on EPA's SCRAM website.  I have recompiled many of the programs, so that they work on Win7, 64-bit.  If you have a paricular need for one of these programs, please contact me at
2/23/2012 1:14 PM
Posted: 9/17/2019 11:14 AM

I have this same problem :/