Not proposing a completely novel approach, we would want to borrow from successful implementations.
Proposed big leap would be the consistency in space/time for activities, vehicles, etc.
A first step towards that could be to output itineraries
Vehicle allocation could be a good first step towards the big leap to test level of effort / implementation requirements.
There was a general question about the quantity of schedule conflicts that we would be proposing re-simulating (unknown at this time).
Path forward could be fundamental incrementalism or broader refactoring
Data model and LOS manager could be a good proof of concept / incremental step. Both could be stand alone things.
Voiced support for the following things:
Model specification GUI / data model
vehicle allocation, accessibility-based sampling
Voiced concerns for the following things:
Do we have the data to support the proposed big leap for a Level 3 model? In-home activity data is difficult to collect.
Would the consortium have the funds to support development and maintenance of all three levels of ActivitySim?
At a conceptual level, can we sketch out the level of computational requirements? Do we have the means to implement? Is there an incremental approach possible?
Would the proposed framework be able to handle disaggregate establishments? CMAP and Ohio have or plan to have this.
Additional questions:
How much detail can you provide on a proposed Level 3 framework?
How would/could an LOS manager efficiently interact with trajectories and DTAs?
Trajectories record node-to-node movements instead of skimming zone-to-zone (something to replace skimming a ridiculous number of zones, especially at the MAZ level)
Need to make a decision to understand how to decide on Level 3 framework.
Do we just put everything on the table and see how things shake out? What’s the process? Will the roadmap provide this type of direction?
Proposed to enumerate the benefits and then have a discussion.
ActivitySimple
Concerns
Don’t overly constrain with a max number of nodes, for example. Still needs to be customizable.
Roadmap will set a direction but will be routinely updated and actively adjusting the course as we move along and learn new things.