Re: [sumo-user] Variation of maxSpeed

Harald Schaefer Tue, 21 Jul 2020 00:46:43 -0700

Hello Dillip,

the maxSpeed of the vehicle is 140 km/h, much less than the edge/lanespeed, so I think the speedFactor is applied to the vehicle speed.


Greetings, Harald

Am 21.07.20 um 09:08 schrieb Tripplanner Mumbai:

Hello Harald,

As per your definitions, speed limit of highway = 180 km/h, andvehicle's speedFactor=0.9 which means that the vehicle can run upto160km/h on the highway (of course speedDev and sigma will affect it).Please clarify and/or rectify my views.

thanks and regards,
Dillip Rout

On Tue, 21 Jul 2020 at 12:08, Harald Schaefer <fechs...@gmail.com<mailto:fechs...@gmail.com>> wrote:


    Hi Simon,

    in my own Autobahn-Scenario I want to run cars around 130 km/h.

    I used a vehicleType with a maxspeed of 140 km/h like

      <vType id="passenger" vClass="passenger" maxSpeed="38.888"
    speedFactor="0.9" speedDev="0.2" sigma="0.5">
            <param key="has.rerouting.device" value="true"/>

    The highway has a speed limit of 50 m/s (= 180 km/h)

    I get a distribution of speeds according to the fcd-output like

    time = 739.0, N =  110 min =   53.3 max =  140.0 mean =  131.0 dev
    =  13.8
    time = 740.0, N =  110 min =   53.5 max =  139.9 mean   = 131.0
    dev =  13.9
    time = 741.0, N =  110 min =   55.5 max =  140.0 mean   = 131.2
    dev =  14.1
    time = 742.0, N =  109 min =   56.0 max =  140.0 mean   = 131.1
    dev =  14.0

    Greetings, Harald

    Am 17.07.20 um 10:32 schrieb simon.frent...@umlaut.com
    <mailto:simon.frent...@umlaut.com>:


    Hey Harald,

    thanks for your reply. I’m using exactly this for streets with a
    speed limit, but I’m targeting the special case of the German
    autobahn.

    As I understand it the simulation works as follows: If there are
    no speed limits, each vehicles drives it’s defined maxSpeed. The
    speedFactor is added to the maxSpeed, but if the driven speed
    exceeds the maxSpeed value, the speed is set back to it. Because
    of this there is no real speed distribution but just a los of
    cars driving at their maxSpeed.

    Best regards

    Simon

    *From:*sumo-user-boun...@eclipse.org
    <mailto:sumo-user-boun...@eclipse.org>
    <sumo-user-boun...@eclipse.org>
    <mailto:sumo-user-boun...@eclipse.org> *On Behalf Of *Harald Schaefer
    *Sent:* Freitag, 17. Juli 2020 09:43
    *To:* sumo-user@eclipse.org <mailto:sumo-user@eclipse.org>
    *Subject:* Re: [sumo-user] Variation of maxSpeed

    Hi Simon,

    unfortunately I'm not the expert on this question, but there was
    a discussion in this mailing list on 2018-08-23.

    Have you read these chapters?

    
https://sumo.dlr.de/docs/Definition_of_Vehicles,_Vehicle_Types,_and_Routes.html#defining_speed_limit_violations_explicitly
    
<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsumo.dlr.de%2Fdocs%2FDefinition_of_Vehicles%2C_Vehicle_Types%2C_and_Routes.html%23defining_speed_limit_violations_explicitly&data=02%7C01%7Csimon.frentrup%40umlaut.com%7Cb64c78290af5428123f908d82a251e70%7C58d65043cd9d409f828b59b40ef5f919%7C0%7C0%7C637305686203653176&sdata=4Dr%2B3xvxfj2%2F8zKtAZ%2FTDt6j7cDiqyu9X787TbQqzy8%3D&reserved=0>

    
https://sumo.dlr.de/docs/Definition_of_Vehicles,_Vehicle_Types,_and_Routes.html#additional_remarks_on_speed_distributions
    
<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsumo.dlr.de%2Fdocs%2FDefinition_of_Vehicles%2C_Vehicle_Types%2C_and_Routes.html%23additional_remarks_on_speed_distributions&data=02%7C01%7Csimon.frentrup%40umlaut.com%7Cb64c78290af5428123f908d82a251e70%7C58d65043cd9d409f828b59b40ef5f919%7C0%7C0%7C637305686203653176&sdata=BKqsOcZxSECGoibSql7QKtdTwJHjlwTkpC8%2BL%2F7QB0A%3D&reserved=0>

    Greetings Harald

    Am 16.07.20 um 09:55 schrieb simon.frent...@umlaut.com
    <mailto:simon.frent...@umlaut.com>:

        Hello,

        adjusting vehicle types I came across the problem that the
        maxSpeed is fix and the speedFactor doesn’t increase the
        speed above this value, but I want to get varying speeds even
        when there is no speed limit and no traffic on the German
        autobahn.

        Is there a way to add variation to the maxSpeed without
        adding numerous vehicle types? (E.g. using a normal
        distribution like the speedFactor.)

        Thanks and best regards

        Simon



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Re: [sumo-user] Variation of maxSpeed

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