- arrival speed defaults to 'arbitrary' so vehicles should generally leave
the simulation with a positive speed. DepartSpeed should not affect this. I
suggest you observe individual vehicles and track them until they leave the
simulation to figure out the problem.
- giving a fixed departSpeed value may delay some vehicle insertions since
a larger front gap is required. To diagnose delayed departures see:
http://sumo.dlr.de/wiki/Simulation/VehicleInsertion#Investigating_insertion_delay.
Behavior after insertion should not be affected apart from the specified
initial speed
- the change in behavior might be caused by assignment of vehicle types.
Check out the vType-parameters of the vehicles in the GUI (right-click on
vehicle) in both the old and the new version of your scenario.
- we have a general policy of not debugging other peoples code since we
have enough of our own code to debug (
http://sumo.dlr.de/wiki/FAQ#I_want_to_do_a_project_with_SUMO_can_you_help_me_with_the_implementation.3F
)

regards,
Jakob


2017-03-21 22:12 GMT+01:00 Vaibhav Rungta <[email protected]>:

> Hello Folks,
> I am working on my algorithm to control vehicles approaching signalized
> intersection.
>
> *What's done*:
> - Implement algorithm (until now) which informs the vehicle to go at a
> particular speed depending on it's position, phase of next traffic light
> and it's speed. I have created an exception for end of red light state (in
> past I asked question about running yellow light).
> - My experiment considers two traffic signals. I have been able implement
> the algorithm for both traffic signals (using list operators)
>
> *Observation*:
> - During analysis I realized that the arrival speed for all vehicle is zero
> when using randomTrips.py.
>
> *Change made to include depart speed*:
>
> '--trip-attributes', 'type = \"vdis\" departSpeed = \"17\"',
>
> I have included about line in the code. No errors observed.
>
> *Concern after inclusion depart speed*:
>
> For some reason the code which works well otherwise is now causing the
> vehicles to get sluggish
>
> and the vehicles move very slowly even when the light turn green (only
> for 1st traffic signal).
>
> In past I got this problem due to logical error and was able to fix it.
>
> Even now when I do not include departSpeed I do not get this problem.
>
> Kindly suggest if I am doing something wrong. Can we can go over the
> code in a chat session?
>
> Thanks.
>
> Regards,
> Vaibhav Rungta
> Graduate Student - Industrial and Systems Engineering
> Graduate Assistant - Toyota Production Systems Lab
> Research Assistant - University Transport Research Center
> 585-754-7133
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