[sumo-user] Junction Blockers does not block vehicles from other interna

["Thanapapas (Knight) Horsuwan" <Thanapapash15@xxxxxxxxxx>]

Hello, 

In this scenario, I closed the leftmost edge to represent a traffic jam with long queue length spill-back. Which, in this case, blocks the whole junction horizontally as shown in the figure below. However, I found out that the vehicles coming from the top can still freely flow to the bottom edge on green light signal. Is this behavior supposed to happen? My hypothesis is that maybe the vehicles are all on different internal lanes, so they will never interfere with each other (?) but I am not sure of the internal workings of SUMO myself, which is why I am asking for clarification on this matter. 

Is it possible for the vehicle in queue length spill-back inside the junction to blockade the vehicles approaching from the intersecting internal lanes?

Note that I used the flag --ignore-junction-blocker -1 (meaning don't ignore vehicles which block the junction). 

Thank you,

Knight H.