Re: [sumo-user] couldChangeLane() error

[himanshu soni <himanshusoni1333@xxxxxxxxx>]

Thank you so much Jakob. I thought I wasted 2 days fixing this error.

Thank you so much

On Fri, Aug 3, 2018, 2:00 AM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

Thank you for providing the example scenario.

You've encountered a bug in function couldChangeLane which would give wrong results immediately after a lane change. https://github.com/eclipse/sumo/issues/4381

This is now fixed in the latest development version.

You may either update your sumo version (new binaries available tomorrow at http://sumo.dlr.de/wiki/Downloads#SUMO_-_Latest_Development_Version) or circumvent the problem by catching the error like this:

                            try:
                                traci.vehicle.changeLane("newVeh1", currentLane, 2000)
                            except traci.TraCIException:                               
                                pass

regards,

Jakob

2018-08-02 11:16 GMT+02:00 himanshu soni <himanshusoni1333@xxxxxxxxx>:

On Thu, Aug 2, 2018 at 2:43 PM himanshu soni <himanshusoni1333@xxxxxxxxx> wrote:

There is an error in the function call getLaneChangeStatePretty(), and other are attached in the mail, and the red vehicle is my target vehicle.

On Thu, Aug 2, 2018 at 12:20 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

please select one situation from your simulation where the result of couldChangeLane does not match your expectation

For that situation, provide the following information:

- the output of the calls getLaneChangeStatePretty(vehID, -1) and getLaneChangeStatePretty(vehID, 1)

- a screenshot from sumo-gui centered on the vehicle with ~50m visible in all directions

Additionally, please provide

- the .sumocfg file

- the .net.xml file

- the output of the commandline call 'sumo --version'

2018-08-02 3:37 GMT+02:00 himanshu soni <himanshusoni1333@xxxxxxxxx>:

Hello Jakob, 

Give me suggestions related to this!

On Wed, Aug 1, 2018, 2:53 PM himanshu soni <himanshusoni1333@xxxxxxxxx> wrote:

It doesn't help, using right-hand drive is giving me that error. Can you please go through the python code once. Corrected attachment is sent with this mail.

Regards 

On Wed, Aug 1, 2018 at 2:27 AM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

The right of way rules are obviously different but apart from that, the largest difference is the lane numbering which you already encountered.

2018-07-31 19:19 GMT+02:00 himanshu soni <himanshusoni1333@xxxxxxxxx>:

Yes, it's left hand drive. Can you tell me what all things change in left hand drive?

Thank you

On Tue, Jul 31, 2018, 10:28 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

Are you simulating left-hand traffic? In that case the lane numbering would be reversed.

2018-07-31 18:03 GMT+02:00 himanshu soni <himanshusoni1333@xxxxxxxxx>:

I don't understand why I'm getting the error in using the function couldChangeLane(), the error gets resolved when I define the right lane with value 1 and left with -1, but the converse is the true version of it.

Help me understand if this is kind of logical error or something else.

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