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[sumo-user] Doubt about speed

Hi guys,

I would like to know what is happening.
I'm doing a research to compare a time of a route using variableSpeedSign
against the own sumo control, and this is happening:

variableSpeedSign:
time 0 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="0.00" ... />
time 1 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="2.50" ... />
time 2 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="5.00" ... />
time 3 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="7.50" ... />
time 4 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="10.00" ... />
time 5 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="12.50" ... />
time 6 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="15.00" ... />
time 7 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="17.50" ... />
time 8 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="20.00" ... />
time 9 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="22.50" ... />
time 10 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="23.33" ...
/>  <-- Max value

The sumo
time 0 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="0.00" ... />
time 1 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="2.50" ... />
time 2 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="5.00" ... />
time 3 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="7.50" ... />
time 4 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="10.00" ... />
time 5 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="12.50" ... />
time 6 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="13.89" ... />
time 7 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="13.89" ... />
time 8 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="13.89" ... />
time 9 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="13.89" ... />
time 10 : <vehicle id="veiculo_1" ...  route="rota1" ... speed="13.89" ...
/>

But, the maximum value for that street is 23.60. Why is this happening ?
The car doesn't reach the value which I would like.

On the route file:
<vType id="carro_1" accel="2.5" decel="3.0" length="2.0" maxSpeed="23.6045"
sigma="0"/>
<route id="rota1" edges="gneE0 gneE1 gneE2 gneE3 gneE61 gneE62"/>
<vehicle depart="0" id="veiculo_1" route="rota1" type="carro_1"/>

Best regards.
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