Re: [sumo-user] Doubt about simulation

[Jakob Erdmann <namdre.sumo@xxxxxxxxxxxxxx>]

Hello,

by default, vehicle speeds have a stochastic component (parameter sigma = 0.5) which causes vehicle to drive slower than the speed limit and also slower than indicated by the variable speed sign.

See http://sumo.dlr.de/wiki/Simulation/VehicleSpeed

regards,

Jakob

2017-10-02 4:01 GMT+02:00 Victor Hugo <victor.hugo.ufpb@xxxxxxxxx>:

Hi, I'm trying to simulate a model which there are no collisions, to do that, I'm using variableSpeedSign to set the velocity of an edge.

My doubt is: Why is variableSpeedSign slower than a vehicle of the same velocity ?

Example:
<vType id="carro_10" accel="2.6" decel="4" length="3.0" maxSpeed="24" sigma="0"/>

and
<variableSpeedSign id="vss_50" lanes="gneE9_0">
    <step time="0" speed="6.7"/><!-- 24 KM/h -->
</variableSpeedSign>

Although the edge has the same size, the arrival time in the first crossroads is different. I don't understand, it should be same... I guess.

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