Re: [sumo-user] device.rerouting

[Jakob Erdmann <namdre.sumo@xxxxxxxxx>]

An important aspect of adaptation-steps is to smooth traffic light cycles.

Thus, the product of adaptation-interval and adaptation-steps should be at least as big as the longest traffic light cycle.

If there are cycles with 60s and 90s in your network I would use something like 180 (least common multiple).

Since updating is a bit expensive,  a cheap way to get this smoothing effecty would be to use

adaptation-interval 10

adaptation-steps 18

The bigger the value, the bigger the smoothing effect obviously. Wether this is desireable depends on the context.

The period parameter determines how fast vehicles can react to traffic fluctuations. Since rerouting is quite expensive I would not set this too low.  We often use 300 in our own scenarios.  It should definitely be higher than adaptation-interval because the values don't change in between updates.

2018-09-28 3:00 GMT+02:00 mohsen hs <mohsenhs82@xxxxxxxxx>:

Hello Jakob, 

I was wondering if you could let me know if there is any rule regarding these three attributes for rerouting. For example, Is it ok if steps==periods? or period should be larger than the number of steps?

And what is the best guess for the number of steps? is 100 fine or is too high/low?

<device.rerouting.period value="300"/>

<device.rerouting.adaptation-interval value="1"/>

<device.rerouting.adaptation-steps value="300"/>

Looking forward to hearing from you.

Many thanks

Mohsen

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