[sumo-user] Internal Edge

[Osman Khalid <osmankhalid2005@xxxxxxxxx>]

Hello

I have run the quick start tutorial of SUMO and it is working fine (https://sumo.dlr.de/docs/Tutorials/quick_start.html).

I want to understand the purpose of Internal edge as it is not touched in the quick start tutorial, though mentioned in the tutorial code on github:
(https://github.com/eclipse/sumo/blob/master/tests/complex/tutorial/quickstart/data/quickstart.net.xml).

I have read the internal edge details: https://sumo.dlr.de/docs/Networks/SUMO_Road_Networks.html#internal_edges

My question is:

1. What is the benefit of using internal edge?

2. Do we have to define internal edges manually as I couldn't find option in netedit (i have latest version)

3. Is it always required to define internal edge.

Thanking you in advance.

Regards.