In my initial version of "The
Barrier" I was kind of skimpy on the details of the issues with the
transportation model. With the rewrite, I felt I needed to make that more
detailed.
I revised 4 more scenes this week. I've done 14 of the 39
scenes I plan to rewrite. Most of the remaining scenes have only minor changes,
but there are four scenes that need major rewrites. In those scenes I had the
characters talk in vague generalities about the issues that come up about the
transportation model. I started to work on those specifics this week.
I've run into some barriers of my own.
Hazy Memory
It's been 13 years since I last worked in transportation
forecasting, and 7 years since I actively kept up with developments in the
field. My memory has faded somewhat over those years. Transportation models
have thousands of details that can become controversial. I struggled to
remember a handful of major issues. I'm sure that as I think about it more,
some more will come to mind.
Dated Knowledge
Since I haven't kept up on new developments, the criticisms
of transportation models may well have changed. Around the time I left the
field, new types of models were being introduced that were supposed to address
some of the major criticisms of existing transportation models.
It may well be that some of the issues I want to use in the
movie are no longer relevant. No doubt there would be some criticism of the newer models, but I wouldn't know what
they would be. I'm not keen to do a lot of research to update my self. Maybe
someone can give me some suggestions I can use.
I do remember one criticism of the newer models was how much
more time and effort they took to run. That isn't an issue I can use in my
movie. Another was the perennial complaint about models that they were black
boxes that nobody understood. I already use this in the movie. I even call the
model software "BlackBox by VooDoo".
What I don't believe has changed is that forecasting models
are still the weak link in the planning process. Knowledgeable people who want
to question transportation plans will go after the forecasts. You can see the
same pattern in the climate change debate.
Avoid Confusion
I worry that if I get too specific about the transportation
model, people without some background in the field will get confused. On the
other hand, the vague descriptions I used in the last version of "The Barrier" confused people
anyway. I need to strike a balance where most viewers can follow what is
happening.
The issues with the model are what Alfred Hitchcock used to
call a McGuffin. It's what the characters in the movie think is important, but
it isn't important to the story or the audience.
Options
My first inclination is to use the jargon that
transportation planners would use. The problem with that approach is that then
I would have to explain what the term means. I've done that in a few places already.
I had the developer play dumb to force the engineers to explain what they
meant.
In the scenes I need to revise, the characters should know what
they talking about, which eliminates any excuse for characters to explain. The
approach I have in mind is to have the characters describe the real world
implication of the issue, rather than use the jargon. That might grate on
people who do know the jargon.
For example, I want the consultant to criticise the volume
delay curve equation. When I have Dennis talk about the note the consultant
sent, he could say something like, "Here he questions how we calculate the
delays from traffic congestion." Most people know what delay and traffic
congestion mean. They don't need to know how the model estimates the delay.
Issues To Use
I've come up with a few more issues I think I can use.
·
Parking cost - this would affect whether people
drive or take the bus.
·
Pedestrians mode constant in the modal choice
model - this would affect how many people walk instead for drive.
·
Ride sharing - this would affect car pooling.
This might include newer services like Uber or Lyft.
·
Trip distribution exponent - this would affect
where people would go to work or shop.
·
Cycling - I plan to use a reference to cycling
elsewhere in the revised script, so I wouldn't want to use it here.
I'll need to work on these issues some more before I go
ahead with my rewrite. I still might decide to do some more research.
You can watch the previous version of "The Barrier" here: http://dynamiclethargyfilms.ca/the-barrier/
This post is a mirror from my main blog http://www.dynamiclethargyfilms.ca/blog
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