Hi Jakob,

Upon review the vehicles are not stopping but are failing to finish their 
continuous change due to the lane ending. This while not ideal, isn't as bad as 
what I said earlier.

My major problem now is lane skipping around the merging zone. The vehilcle is 
only allowed to switch lanes on the "merge" edge which has 3 lanes. However, it 
seems to be hopping over two lanes when a lane change is commanded at the 
zipper (or perhaps right before it?). I have already tried to limit this by 
including a position condition. It should not be able to change lanes at the 
junction.

On this same project I also have an issue with TraCI not detecting collisions 
which the simulator is.

I fear a trace file may not show case the problem as I am using a reinforcement 
learning model to respond dynamically to the environment which contains 
randomness. I have however, included the scenario. The command being used is a 
simple traci.vehicle.changeLane(id, 1, 10).

Kind regards,

Jordan
________________________________
From: sumo-user <sumo-user-boun...@eclipse.org> on behalf of Jakob Erdmann 
<namdre.s...@gmail.com>
Sent: 30 January 2023 11:04
To: Sumo project User discussions <sumo-user@eclipse.org>
Subject: Re: [sumo-user] Lane hopping and emergency braking at zipper

Technically, there should never be a lane-end warning if the zipper connections 
are set up correctly. It's hard to tell what's going on without observng 
running traci code.
Please put together a minimal example that triggers the error message a package 
the scenario files together with a traci-traceFile: 
https://sumo.sourceforge.net/docs/TraCI/Interfacing_TraCI_from_Python.html#generating_a_log_of_all_traci_commands

Am So., 29. Jan. 2023 um 02:06 Uhr schrieb Jordan Poots 
<jordan.po...@outlook.com<mailto:jordan.po...@outlook.com>>:
Hello,

I am using a zipper lane driven by TraCI controlled vehicles. This zipper lane 
reduces three lanes to two. The lane changes are continuous. The TraCI vehicles 
can merge at any point on the zipper lane or simply follow the lane and merge 
as it ends. Once the vehicles have merged, control of them is returned to SUMO.

I find when vehicles choose to change lanes late on the zipper lane, they have 
two problems.

  1.  Occasionally, they will emergency brake. I receive an error message about 
the lane ending. I assume this is in reference to either the to or from lane 
ending as the moving vehicle moves onto the zipper junction during the lane 
change.
  2.  They occaisonally cross two lanes instead of the intended one and thus 
end up on the left lane on the reduced side instead of the right.

How might I configure my setup to avoid these issues?

Thanks,

Jordan

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<?xml version="1.0" encoding="UTF-8"?>

<!-- generated on 2023-01-19 17:32:01 by Eclipse SUMO netedit Version 1.15.0
<configuration xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:noNamespaceSchemaLocation="http://sumo.dlr.de/xsd/netconvertConfiguration.xsd";>

    <input>
        <sumo-net-file value="C:\Users\AdminL\Desktop\TraCI\19 SPARSE REWARDS\learning_net.net.xml"/>
    </input>

    <output>
        <output-file value="C:\Users\AdminL\Desktop\TraCI\19 SPARSE REWARDS\learning_net.net.xml"/>
    </output>

    <processing>
        <geometry.min-radius.fix.railways value="false"/>
        <geometry.max-grade.fix value="false"/>
        <offset.disable-normalization value="true"/>
        <lefthand value="0"/>
    </processing>

    <junctions>
        <no-turnarounds value="true"/>
        <junctions.corner-detail value="5"/>
        <junctions.limit-turn-speed value="5.50"/>
        <rectangular-lane-cut value="0"/>
    </junctions>

    <pedestrian>
        <walkingareas value="0"/>
    </pedestrian>

</configuration>
-->

<net version="1.9" junctionCornerDetail="5" limitTurnSpeed="5.50" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:noNamespaceSchemaLocation="http://sumo.dlr.de/xsd/net_file.xsd";>

    <location netOffset="0.00,0.00" convBoundary="0.00,-70.70,400.00,0.00" origBoundary="-10000000000.00,-10000000000.00,10000000000.00,10000000000.00" projParameter="!"/>

    <edge id=":center_0" function="internal">
        <lane id=":center_0_0" index="0" speed="6.17" length="3.21" shape="143.09,-9.18 143.77,-8.53 144.34,-8.18 144.99,-8.03 145.93,-8.00"/>
    </edge>
    <edge id=":center_1" function="internal">
        <lane id=":center_1_0" index="0" speed="26.00" length="3.33" shape="142.60,-4.80 145.93,-4.80"/>
        <lane id=":center_1_1" index="1" speed="26.00" length="3.33" shape="142.60,-1.60 145.93,-1.60"/>
    </edge>
    <edge id=":merge_0" function="internal">
        <lane id=":merge_0_0" index="0" speed="26.00" length="8.27" shape="246.00,-8.00 248.46,-7.50 250.00,-6.40 251.54,-5.30 254.00,-4.80"/>
        <lane id=":merge_0_1" index="1" speed="26.00" length="8.27" shape="246.00,-4.80 254.00,-4.80"/>
        <lane id=":merge_0_2" index="2" speed="26.00" length="8.27" shape="246.00,-1.60 254.00,-1.60"/>
    </edge>

    <edge id="incoming" from="left" to="center" priority="-1">
        <lane id="incoming_0" index="0" speed="26.00" length="142.60" shape="0.00,-4.80 142.60,-4.80"/>
        <lane id="incoming_1" index="1" speed="26.00" length="142.60" shape="0.00,-1.60 142.60,-1.60"/>
    </edge>
    <edge id="merging" from="center" to="merge" priority="-1">
        <lane id="merging_0" index="0" speed="26.00" length="100.07" acceleration="1" shape="145.93,-8.00 246.00,-8.00"/>
        <lane id="merging_1" index="1" speed="26.00" length="100.07" shape="145.93,-4.80 246.00,-4.80"/>
        <lane id="merging_2" index="2" speed="26.00" length="100.07" shape="145.93,-1.60 246.00,-1.60"/>
    </edge>
    <edge id="on-ramp" from="merge_inflow" to="center" priority="-1" length="75.00">
        <lane id="on-ramp_0" index="0" speed="26.00" length="75.00" shape="80.43,-71.83 143.09,-9.18"/>
    </edge>
    <edge id="outgoing" from="merge" to="end" priority="-1">
        <lane id="outgoing_0" index="0" speed="26.00" length="146.00" shape="254.00,-4.80 400.00,-4.80"/>
        <lane id="outgoing_1" index="1" speed="26.00" length="146.00" shape="254.00,-1.60 400.00,-1.60"/>
    </edge>

    <junction id="center" type="priority" x="150.00" y="0.00" incLanes="on-ramp_0 incoming_0 incoming_1" intLanes=":center_0_0 :center_1_0 :center_1_1" shape="145.93,0.00 145.93,-9.60 145.29,-9.68 145.00,-9.78 144.72,-9.91 144.46,-10.09 144.22,-10.31 141.96,-8.04 142.76,-7.13 142.94,-6.81 142.97,-6.58 142.86,-6.45 142.60,-6.40 142.60,0.00" radius="1.00">
        <request index="0" response="000" foes="000" cont="0"/>
        <request index="1" response="000" foes="000" cont="0"/>
        <request index="2" response="000" foes="000" cont="0"/>
    </junction>
    <junction id="end" type="dead_end" x="400.00" y="0.00" incLanes="outgoing_0 outgoing_1" intLanes="" shape="400.00,-6.40 400.00,0.00"/>
    <junction id="left" type="dead_end" x="0.00" y="0.00" incLanes="" intLanes="" shape="0.00,0.00 0.00,-6.40"/>
    <junction id="merge" type="zipper" x="250.00" y="0.00" incLanes="merging_0 merging_1 merging_2" intLanes=":merge_0_0 :merge_0_1 :merge_0_2" shape="254.00,0.00 254.00,-6.40 250.97,-7.23 249.03,-8.77 247.79,-9.36 246.00,-9.60 246.00,0.00">
        <request index="0" response="010" foes="010" cont="0"/>
        <request index="1" response="001" foes="001" cont="0"/>
        <request index="2" response="000" foes="000" cont="0"/>
    </junction>
    <junction id="merge_inflow" type="dead_end" x="79.30" y="-70.70" incLanes="" intLanes="" shape="79.30,-70.70 81.56,-72.96"/>

    <connection from="incoming" to="merging" fromLane="0" toLane="1" via=":center_1_0" dir="s" state="M"/>
    <connection from="incoming" to="merging" fromLane="1" toLane="2" via=":center_1_1" dir="s" state="M"/>
    <connection from="merging" to="outgoing" fromLane="0" toLane="0" via=":merge_0_0" dir="s" state="Z"/>
    <connection from="merging" to="outgoing" fromLane="1" toLane="0" via=":merge_0_1" dir="s" state="Z"/>
    <connection from="merging" to="outgoing" fromLane="2" toLane="1" keepClear="0" via=":merge_0_2" dir="s" state="M"/>
    <connection from="on-ramp" to="merging" fromLane="0" toLane="0" via=":center_0_0" dir="r" state="M"/>

    <connection from=":center_0" to="merging" fromLane="0" toLane="0" dir="r" state="M"/>
    <connection from=":center_1" to="merging" fromLane="0" toLane="1" dir="s" state="M"/>
    <connection from=":center_1" to="merging" fromLane="1" toLane="2" dir="s" state="M"/>
    <connection from=":merge_0" to="outgoing" fromLane="0" toLane="0" dir="s" state="M"/>
    <connection from=":merge_0" to="outgoing" fromLane="1" toLane="0" dir="s" state="M"/>
    <connection from=":merge_0" to="outgoing" fromLane="2" toLane="1" dir="s" state="M"/>

</net>
<?xml version="1.0" encoding="UTF-8"?>

<!-- generated on 2023-01-18 22:16:09 by Eclipse SUMO netedit Version 1.15.0
-->

<routes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:noNamespaceSchemaLocation="http://sumo.dlr.de/xsd/routes_file.xsd";>
    <!-- VTypes -->
    <vType id="no_co-op" lcCooperative="-1" carFollowModel="IDM"/>
    <vType id="rl" color="red" accel="3" decel="3"/>
    <!-- Routes -->
    <route id="r_0" edges="on-ramp merging outgoing"/>
    <route id="r_1" edges="incoming merging outgoing"/>
    <!-- Vehicles, persons and containers (sorted by depart) -->
    <flow id="f_0" type="no_co-op" begin="0.00" departLane="1" departSpeed="22.00" route="r_1" end="3600.00" probability="0.10"/>
    <flow id="f_1" type="no_co-op" begin="0.00" departLane="0" departSpeed="22.00" route="r_1" end="3600.00" probability="0.15"/>
    <flow id="uncoop" type="no_co-op" begin="0.00" departLane="0" departSpeed="22.00" route="r_1" end="3600.00" probability="0.15">
        <param key="junctionModel.ignoreTypes" value="rl"/>
    </flow>
</routes>

Attachment: training_sim.sumocfg
Description: training_sim.sumocfg

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