Hi Hriday,
your braking distance formula seems alright. "egoDist" and "foeDist" refer
to different vehicles and by consequence to different distances to a common
conflict area. "egoExitDist" and "foeExitDist" refer to the exit of the
common conflict area along the respective vehicle path.
Best regards
Mirko
-----Original-Nachricht-----
Betreff: Re: [sumo-user] Braking distance used for getJunctionFoes -
explained
Datum: 2024-01-05T14:35:51+0100
Von: "Hriday Sanghvi" <[email protected]>
An: "Mirko Barthauer" <[email protected]>
Thank you Mirko, what about the braking distance calculation? Am I
recalculating something SUMO already calculates and doing it incorrectly?
Then, does SUMO provide this information for a vehicle?
Still confused about the exact meaning of some variables, could you clarify
please? My understanding of the meaning of the variables:
foeId: ID of the vehicle that is considered as a foe (eg., conflicting flow
at the intersection)
egoDist: Distance of ego vehicle to the intersection + intersection to foe
vehicle
foeDist: Distance of foe vehicle to the intersection + intersection to the
ego vehicle (shouldn't this be the same as egoDist then?)
egoExitDist: Distance of ego vehicle to the exit of the conflict area /
intersection
foeExitDist: Distance of foe vehicle to the exit of the conflict area /
intersection (which may be the exit of the junction or more upstream - but
how can I control this?)
egoLane: Internal lane ID of the ego vehicle at this intersection/conflict
area
foeLane: Internal lane ID of the foe vehicle at this intersection/conflict
area
egoResponse: True if foe vehicle has right of way or if ego vehicle is
yielding, otherwise False
foeResponse: True if ego vehicle has right of way or if foe vehicle is
yielding, otherwise False
Please advise.
Sincerely,
Hriday
On Thu, 4 Jan 2024 at 07:16, Mirko Barthauer <[email protected]
<mailto:[email protected]> > wrote:
Hi Hriday,
regarding your questions:
a: Distances are sums of euclidean distances of single net elements /
stretches between subsequent geometry points along the routes of the
vehicles.
b: They give the distance to the exit of the conflict area, which may be
the exit of the junction (or more upstream)
c: It is the right-of-way information like defined here
<https://sumo.dlr.de/docs/Networks/SUMO_Road_Networks.html#requests> in
the docs. True => yield
Best regards
Mirko
-----Original-Nachricht-----
Betreff: [sumo-user] Braking distance used for getJunctionFoes -
explained
Datum: 2024-01-03T18:05:43+0100
Von: "Hriday Sanghvi via sumo-user" <[email protected]
<mailto:[email protected]> >
An: "Sumo project User discussions" <[email protected]
<mailto:[email protected]> >
Hello,
From TraCI's vehicle domain, I am trying to make use of:
getJunctionFoes(self, vehID, dist=0.0)
Return list of junction foes [(foeId, egoDist, foeDist, egoExitDist,
foeExitDist, egoLane, foeLane, egoResponse, foeResponse), ...] within the
given distance to the given vehicle
1. For the dist parameter, I am calculating maximum braking distance for
my ego vehicle as:
square(current_speed) / (2 * max_deceleration_ability) so that ego
vehicle can decide to stop in time.
(from the v^2 - u^2 = 2aS formula, assuming constant maximum deceleration
and final velocity to be 0). Does that make sense?
2. Sample output that I got using this method:
(('flow_btt.0', 38.19626194106837, 31.700000000000003,
41.396261941068374, 34.900000000000006, ':intersection_2_0',
':intersection_1_0', True, False), ...)
From that,
a. Just to confirm, are all the distances calculated using the Euclidean
distance formula?
b. I assume the egoExitDist and foeExitDist are the distance till the
"exit" of the junction?
c. What is egoResponse and foeRespone?
Thank you,
Sincerely,
Hriday
_______________________________________________
sumo-user mailing list
[email protected]
To unsubscribe from this list, visit
https://www.eclipse.org/mailman/listinfo/sumo-user
