Hi Bernhard,
I'm not sure SUMO can model this case correctly without side effects. Some
thoughts:
- you can give the connection a custom shape which cuts into the opposing
traffic (see context menu of connections in netedit or PlainXML
<https://sumo.dlr.de/docs/Networks/PlainXML.html#explicitly_setting_which_edge_lane_is_connected_to_which>
format)
- if you want passenger cars to take a different path than trucks, you need
separate incoming lanes (one can be very short and thin such that it can be
noticed from very close only) and connect both to the outgoing lane
Please let us know if you find a solution which works well.
Best regards
Mirko
-----Original-Nachricht-----
Betreff: [sumo-user] How to modell sharp turns of long vehicles that need a
hole in the opposing trafic
Datum: 2024-01-04T12:47:12+0100
Von: "Bernhard Seckinger via sumo-user" <sumo-user@eclipse.org>
An: "sumo-user@eclipse.org" <sumo-user@eclipse.org>
Hi,
I need to model a truck not being able to do a right turn on a sharp corner
(160° turn) while traffic blocks the opposing lane. A small example, which
might help to clearify things:
test.nod.xml:
<nodes>
<node id="n1" x="0" y="0"/>
<node id="n2" x="0" y="50"/>
<node id="n3" x="200" y="0"/>
<node id="n4" x="400" y="0"/>
</nodes>
test.edg.xml:
<edges>
<edge id="e1a" from="n1" to="n3" speed="4" width="2.5"/>
<edge id="e1b" from="n3" to="n1" speed="4" width="2.5"/>
<edge id="e2a" from="n2" to="n3" speed="4"/>
<edge id="e3a" from="n3" to="n4" speed="4"/>
<edge id="e3b" from="n4" to="n3" speed="4"/>
</edges>
test.rou.xml:
<routes>
<vType id="c1" guiShape="passenger"/>
<vType id="c2" guiShape="truck" length="10"/>
<route id="r1" edges="e1a e3a"/>
<route id="r2" edges="e2a e1b"/>
<flow id="v1" begin="0" end="7200" period="1" type="c1" route="r1"/>
<vehicle id="v0" depart="35" route="r2" type="c2"/>
</routes>
In this example the truck just turns, without regarding the stream of cars
on
the opposing lane. (Visually the back of the truck moves outside of the
road
(in step 85).)
While searching for a solution for this, I found the prohibition-tag,
adding
test.con.xml:
<connections>
<prohibition prohibitor="e1a->e3a" prohibited="e2a->e1b"/>
</connections>
This works partially: The truck stops for a while.
But:
a) After some time it moves on, although there are still opposing cars.
b) All other vehicles having to do this turn stop too, even when short
enough.
Does anyone know a good solution to this problem?
Yours, Bernhard Seckinger
--
Bernhard Seckinger <bernhard.seckin...@bueffee.de>
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