Re: [sumo-user] Lane changing in left-most lane

[Jakob Erdmann <namdre.sumo@xxxxxxxxx>]

Hello,

By default vehicles in SUMO will avoid passing on the right on motorways unless congested.

Vehicles would also stay in the left lane if the need to make a left turn in the near future.

Please give more conditions on the scenario where you expect changing to the right. (i.e strategic change for following the route or tactical change for overtaking a slow vehicle).

You can use traci.vehicle.changeLane or changeLaneRelative to force a change.

regards,

Jakob

Am Fr., 1. Mai 2026 um 06:26 Uhr schrieb Thae Nandar Soe via sumo-user <sumo-user@xxxxxxxxxxx>:

Hello

i want to ask about the lane changing behavior in left-most lane. I use  traci.vehicle.setLaneChangeMode(vehID, 1621) to allow lane changing. The vehicles in the left-most lane do not change lanes when the neighboring right lane allows that vehicle type and has available space that can easily pass through. They still choose to stay in the left-most lane. if i want to do lane change to the right from left-most lane, how can i do? Regards, Thae

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