Re: [sumo-user] Obtaining the estimated time of arrival of the vehicle

[Jakob Erdmann <namdre.sumo@xxxxxxxxx>]

The speed depends on the right-of-way rules and traffic on minor roads has to slow down before entering the intersection.

You can reduce the slow-down by setting a higher value for attribute 'visibility' of the connection elements (if vehicles can observe that the intersecion is free of traffic they do not have to slow down).

Or you can set all junction types to "unregulated" which disables right-of-way rules.

Am Di., 18. Mai 2021 um 10:23 Uhr schrieb g2121044 <g2121044@xxxxxxxxx>:

Thank you for your reply.

I changed the VType and was able to reduce the difference in arrival time a bit.

However, there is still a big difference.

After observing the simulation, there is still a deceleration of 1 to 2 m/s at the junction and I think this is one of the reasons.

For reference, I changed the limitTurnSpeed in net.xml from 5.5 to 13.88, but the speed through the junction is still 6~7m/s.

Looking at the following page, is it not possible to change the speed for the safety of the car?

https://sumo.dlr.de/docs/Simulation/Safety.html

Other than changing limitTurnSpeed, is there any other way to change the speed through the junction?

regard,

Nishikawa

----- Original Message -----
From: Jakob Erdmann <namdre.sumo@xxxxxxxxx>
To: Sumo project User discussions <sumo-user@xxxxxxxxxxx>
Date: 2021-05-18 16:02:21
Subject: Re: [sumo-user] Obtaining the estimated time of arrival of the vehicle

In the simulation, there are some random factors that affect vehicle speed. See https://sumo.dlr.de/docs/Simulation/Randomness.html

You can eliminate them by re-configuring the vType with sigma="0" speedDev="0".

Note, that there can still be interaction at junctions which are not predicted by duarouter.

Am Di., 18. Mai 2021 um 07:57 Uhr schrieb g2121044 <g2121044@xxxxxxxxx>:

Hello.
I have a question about this email.
https://www.eclipse.org/lists/sumo-user/msg09369.html

I forgot to include the net.xml information in this email.
The conditions I used in my simulation are
・No traffic lights
・No randomly generated general vehicles (only demand cabs)
・Equal speed limit on the map
The conditions are as follows Even though I eliminated all factors that affect the arrival time of the vehicles, there was a difference between the exitTime and the simulation time. The difference is created even when the vehicle is running in a straight line. This difference seems to grow in proportion to the distance traveled.

For example, if I want to know the estimated time of arrival of a demand cab, is there any way to know it other than using duarouter(--exit-time)?

I'm sorry for repeating myself.

regard,
Nishikawa
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