[sumo-user] routing vehicles over large roundabout

[Menno van der Woude <menno@xxxxxxxxxxxxxxxxxx>]

Hello,

while simulating a large roundabout I am running into trouble with the 
routes vehicles choose. The roundabout has four arms. Many vehicles want 
to go "straight", i.e. they want to take the first exit after entering 
the roundabout. SUMO however sends these vehicles for a trip all around 
the roundabout, which leads to congestion as the traffic light program 
is not equipped for this (it would also be odd in reality).

I am using OD2TRIPS to generate trips files that I feed into SUMO via 
the <route-files> attribute in the sumocfg file.

Given this scenario, is there a way to force (all) vehicles to choose 
the shortest route?

Thanks, greets,

Menno