Thanks for the reply.
As I've observed - MAROUTER creates those traffic assignment zones and routes between them.
Every edge has a capacity defined by a getCapacity function (based on roadclass and length etc.).
Capacity constraint function is used to calculate travel time if we would like to travel on this edge (it is based on road's capacity, flow, speed limit etc).
This name confuses me - like shouldn't it be "getEdgeTravelTime" instead? Or is it a constraint actually on travel time because of capacity contraints?
Function incremental for all edges calculates travel times
and attaches to it.
If im not mistaken we take the best route by cost which depends mainly to travel times of the edges - same as water or gas would choose way to spread.
In the end we still count each vehicle separately but direct them basing on those kinda macroscopic calculations from above? Is that the whole idea?
Hello,
MAROUTER uses a hard-coded capacity-constraint function based on speed limit, lane number and edge priority
to compute traveltimes and flows based on density.
For details, see
src/marouter/ROMAAssignments::capacityConstraintFunction
src/marouter/ROMAAssignments::getCapacity
MAROUTER reads OD matrices and creates route files. These route files contain route distributions between traffic assignment zones. Each route in the distribution is a fully specified list of network edges.
regards,
Jakob
Hi. I need to use macroscopic traffic flow model - it is necessary for some mathematical calculations. I have read in FAQ that sumo supports "macroscopic traffic assignment" using MAROUTER. I feel like this doesn't mean that I have full macroscopic model with elements like density, flow based on density etc. Am I right? After proceeding everything from documentation with MAROUTER I get traffic assignment zones, is this the point of "macroscopic traffic assignment" support?
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