Three questions about road traffic simulation

Hello,

My project is about road traffic simulation in steel mill.

There are a wide variety of cargoes to be carried from load-zone to dump-zone, such as molten iron, steel slag, sand and waste, etc. All of those cargoes are carried by vehicles, and the different load zones and dump zones are living in scattered areas.

I want to use NetworkNodes to develop a path network for all vehicles(task executer object).

I have three questions.

The first one is how can I get the vehicles quantity on one path within a given period of time, and the second one is about the parallel vehicles quantity on one point in time. The above both counts are base of determining the width of the road.

The third question is how to get NetworkNodes around a given node, even the NetworkNode is not directly connected to the latter? In my model, after a vehicle arrived a dump-zone and unloaded cargo from it, and then it will search for the nearest load-zone and travel to this load-zone to load itself again.

Anyone who has an idea or thinks about those questions? I really need it for my model, thanks very much!

Hello,

My project is about road traffic simulation in steel mill.

There are a wide variety of cargoes to be carried from load-zone to dump-zone, such as molten iron, steel slag, sand and waste, etc. All of those cargoes are carried by vehicles, and the different load zones and dump zones are living in scattered areas.

I want to use NetworkNodes to develop a path network for all vehicles(task executer object).

I have three questions.

The first one is how can I get the vehicles quantity on one path within a given period of time, and the second one is about the parallel vehicles quantity on one point in time. The above both counts are base of determining the width of the road.

The third question is how to get NetworkNodes around a given node, even the NetworkNode is not directly connected to the latter? In my model, after a vehicle arrived a dump-zone and unloaded cargo from it, and then it will search for the nearest load-zone and travel to this load-zone to load itself again.

Anyone who has an idea or thinks about those questions? I really need it for my model, thanks very much!

Question 1:
In the OnContinue trigger of the network node, the number of travellers can be found with: content(gettablecell(connectionsout(current),toedg e,PORT_ACTIVE))

You can maintain the maximum in a table label on the network nodes with number of rows matching the number of paths/edges/output ports. (Note: there are no input ports to network nodes, just outputs)

Hi, Jason, thank you very much! Your answer is just what I want.

About Question 3, I found the following words in Flexsim's Users Manual, "The distance/routing table of all network nodes in the model is kept on a global object in the model called "defaultnetworknavigator". The re-calculation is optimized to only be executed if changes have been made to the network. "
But when I programed with the mentioned global table "defaultnetworknavigator", I found that the table did not exist.
Can anyone help me? Thanks.

Originally Posted by Frans Zeng

global object in the model called "defaultnetworknavigator".
mentioned global table "defaultnetworknavigator"

Notice the difference

The tables with the routing and distance information are not global tables but are stored on a global object. In the early days these tables were actually visible in the tree of the defaultnetworknavigator, but currently these tables are stored internally in the core of the Flexsim engine.