Review free flow speeds

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Currently, free-flow speeds in Dynameq are set to speed in planning network + 5 
mph.  The issue here is to look at how free-flow speeds are set in the current 
planning network and determine if we are happy with that.

It used to be that the free-flow speeds in the network were too fast for a 
static model, so instead there was a factor in front of the VDF that was a 
function of facility type and increased the free-flow travel time by some 
constant ratio in order to match the observed travel times better.  This was 
ugly, and there was talk of stripping it out.  The question is:  what are we 
left with for free-flow speeds?  If it is something like a posted speed, that 
is probably pretty close to what we want.  If the free-flow speeds are reduced 
in the static model to account for stop-sign delay in uncongested conditions, 
then we probably need to speed them up more for the DTA.  

Original issue reported on code.google.com by greg.erh...@ucl.ac.uk on 12 Jun 2012 at 5:22

• Blocking: Declare calibration "Final" for the purposes of this project #151

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Original comment by elizab...@sfcta.org on 22 Aug 2012 at 12:47

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Original comment by elizab...@sfcta.org on 26 Sep 2012 at 6:22

• Now blocking: Declare calibration "Final" for the purposes of this project #151

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Original comment by dan.tisc...@sfcta.org on 27 Dec 2012 at 1:03

• Changed state: On-Hold