Re: [sumo-user] Understanding lcCooperativeSpeed Parameter

[Jakob Erdmann <namdre.sumo@xxxxxxxxx>]

Hello,

the code for lcCooperativeSpeed is at https://github.com/eclipse/sumo/blob/c16317561f2844d18dca1d0e14d96ce94b96c544/src/microsim/lcmodels/MSLCM_LC2013.cpp#L265-L277

However, the code that handles the situation in the screenshot is at https://github.com/eclipse/sumo/blob/c16317561f2844d18dca1d0e14d96ce94b96c544/src/microsim/lcmodels/MSLCM_LC2013.cpp#L240-L263

Basically, vehicle 2 should leave enough space so vehicle 1 can merge regardless of lcCooperative.

In my own test with the stated parameters I was unable to replicate the situation from your screenshot.

Which version of SUMO are you using?

regards,

Jakob

Am Mo., 1. Nov. 2021 um 16:23 Uhr schrieb Bae, Jong In <jbae42@xxxxxxxxxx>:

Hello,

I'm trying to understand how different values of lcCooperativeSpeed affects the vehicle behavior.

I'm having a hard time locating the source code for lcCooperativeSpeed.

Could you please point me to a link of the source code?

Also, I'm trying to understand one behavior that I saw in the simulation.

In this simulation, only one vehicle type is used - and they all have lcCooperative=0 and lcCooperativeSpeed=0.75.

In the attached screenshot, vehicle #2 slows down to let vehicle#1 merge but vehicle#1 fails to.

This behavior repeatedly occurs with the following vehicles on the exit lane.

I'm assuming vehicle#1 is unable to make the merge due to a small gap.

I'm just trying to understand how different lcCooperativeSpeed values affect this decision process.

Any explanation or help to understand would be appreciated!

Thanks!

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