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Re: [sumo-user] Question regarding drivers dynamics and --step-method.ballistic

Thank you for the quick response. I tried using carFollowModel=“IDM” to
produce smoother curves. But, I did not see any change; the car speeds are
still piecewise constant. The following plot shows the vehicle speed with
carFollowModel=“IDM”. 
https://www.ssec.wisc.edu/~willemm/sumo-debug/Images/sumo_driver_plot_carfllow_idm.png
To produce the data I executed 
sumo --step-method.ballistic --step-length 1 -c TuST.sumocfg --fcd-output
Output/test_out_v9.xml

The route XML where I use carFollowModel=“IDM” is defined as follows:
<?xml version="1.0" encoding="UTF-8”?>
<routes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:noNamespaceSchemaLocation="http://sumo.dlr.de/xsd/routes_file.xsd";>
        <vType id="type3" accel="0.8" decel="4.5" sigma="0.5" length="5"
maxSpeed="70" carFollowModel="IDM">
                
        </vType>
    <vehicle id="1" depart="0.00" type="type3" fromTaz="100042"
toTaz="112008" departLane="free" departSpeed="max">
        <routeDistribution>
            <route cost="608.24" probability="2.00000000" edges="486666536
121952572#11 -394884903 -172685302 -121963538 31696573 134417957#1
134417957#2 134417957#3 31786634 303596912 613562279 31696628#0 32007901
247705709#3 450274964 450274969 450274968 450274965 450274966 450274971
-149906234 149906235 -149906233 75003611 514722736 514722740 47515046
514722734 370608803 239304401 239304403 69716815#1 -59045257#1 -59045257#0
-59045257#10 -59045257#9 -59045257#8 -59045257#7 69716810 -69716808
-69716818 -69716813 -69716824 -69716817 69716826 59043979#5 149967830
-252268249#7 -252268249#6 -252268249#5 -252268249#4 -252268249#3
-252268249#2 -252268249#1 -252268249#0 -556748515 -53756591#1 -53756591#0
53756595#4 53756595#0 53756595#1 443256492"/>
        </routeDistribution>
    </vehicle>
    <vehicle id="2" depart="0.00" type="type2" fromTaz="100042"
toTaz="112008" departLane="free" departSpeed="max">
        <routeDistribution>
            <route cost="608.24" probability="1.00000000" edges="486666536
121952572#11 -394884903 -172685302 -121963538 31696573 134417957#1
134417957#2 134417957#3 31786634 303596912 613562279 31696628#0 32007901
247705709#3 450274964 450274969 450274968 450274965 450274966 450274971
-149906234 149906235 -149906233 75003611 514722736 514722740 47515046
514722734 370608803 239304401 239304403 69716815#1 -59045257#1 -59045257#0
-59045257#10 -59045257#9 -59045257#8 -59045257#7 69716810 -69716808
-69716818 -69716813 -69716824 -69716817 69716826 59043979#5 149967830
-252268249#7 -252268249#6 -252268249#5 -252268249#4 -252268249#3
-252268249#2 -252268249#1 -252268249#0 -556748515 -53756591#1 -53756591#0
53756595#4 53756595#0 53756595#1 443256492"/>
        </routeDistribution>
    </vehicle>
</routes>



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