[
Date Prev][
Date Next][
Thread Prev][
Thread Next][
Date Index][
Thread Index]
[
List Home]
Re: [sumo-user] Two Problems: Traffic only travels on one lane of a two lane road and Restricted Bus Lane produces error with Bus stop
|
Hi Jakob,
Below is I think the diagram you want. I am trying to take
traffic engineers Synchro volumes at peak hour and calibrate the
model to match their predicted queue lengths. At junction "A" two
single lanes of traffic are merged into 2 lane roads from "A"-"F".
In general the traffic at junction "A" is in large headed for
junction "F" where it splits roughly 50-50, so there are a lot of
vehicles which want to turn left at "F".
I followed Guiliana's advice and at junction "A", I switched the
RH fork road lane to join the right lane and the LH fork to join
the left lane. This has largely "fixed" the problem at junction
"C". However there is still a problem between "C" and "D" as well
as between "E" and "F" where left turning vehicles wait and block
the RH lane (see second screen shot).
The Left turning vehicles often seem to make a very early
decision to change lanes, when the normal driving behavior is to
change late - I just drove through this intersection myself this
am, and I go left at junction "F", but am in the RH lane until I
reach the left turn only lanes at "F".
Is there a control or parameter that could specify this, so that
the simulation traffic can be made to behave more akin to the real
world?
Regards,
John

On 1/4/2021 5:07 AM, Jakob Erdmann
wrote:
Hi John,
please enable "show lane to lane connections" in the gui
settings and provide a screenshot that shows the two-lane
approach with sufficient resolution to see all connections.
regards,
Jakob
Hi John,
You can then try
connecting the 1-edge lane only to the right lane of
the 2-lane edge (see image). This will increase the
queue in the right lanes, but I´m really not sure that
this is the best solution the modeling perspective.
Keep the value of lcStrategy under 1 as well, which
will reduce the forecast distance that affects the
choice of the strategic lane.

Regards,
Giuliana
Hi Guiliana,
The vClass addition fixed the bus
problem, thanks!
I am still having trouble with
simulating the two lanes of traffic going to three at
the crossway. I have checked all the junctions and
there are two paths all the way through ending on the
three lane crossway, which has a left turn only lane
as the third lane with two thru lanes.
Most of the traffic does turn left
onto the crossway but there should be two lanes queued
up, not one.
I have changed a few lane changing
model parameters such as lcKeepRight="0.5”,
lcStrategic="0.3” and lcOverTakeRight="1", but I still
cannot get the simulation traffic to occupy both
lanes. Any further thoughts how I might accomplish
this?
John
Hi John,
Maybe I
can help you.
Regarding
the problem with the 2-lane street: have you
checked the connections? Please try changing
the connections of the junction before the
crossway (see image). It looks like that the
majority of the vehicles want to turn left on
the crossway. If the vehicles want to turn
left, they will only use the left lane,
because if they stay on the right one, they
will not be able to access to the left lanes
of the last 3-lanes edge.
As for the
error message, have you checked that the
vClass of your vehicle “BUS65I1” is “bus”?
Regards,
Giuliana
Jakob,
I am modeling a proposed restricted buslane
that cuts across three busy intersections in our
town. I have the model working but have two
problems: a two lane edge defined has only one
lane being used when the simulation runs; and an
error message occurs when a bus-top is place on
a restricted bus lane.
The LH image below shows the traffic on the
2-lane Washington Street is only using one lane
of the roadway after the two single lane feeder
roads. Nearly all the traffic turns east at the
major intersection with the divided highway. I
cannot get the model to reflect the real world
where both lanes are fully occupied at this
hour.
The model without the bus lane runs the buses
fine and they stop at the bus stop on the edge
as marked. Then, I created a new network with
the edge/lane rte9e6_0 defined as being a
restricted bus lane with bus stop, but get the
following error message:
Any advice to fix these two problems?
Regards,
John
_______________________________________________
sumo-user mailing list
sumo-user@xxxxxxxxxxx
To unsubscribe from this list, visit
https://www.eclipse.org/mailman/listinfo/sumo-user
_______________________________________________
sumo-user mailing list
sumo-user@xxxxxxxxxxx
To unsubscribe from this list, visit https://www.eclipse.org/mailman/listinfo/sumo-user
_______________________________________________
sumo-user mailing list
sumo-user@xxxxxxxxxxx
To unsubscribe from this list, visit https://www.eclipse.org/mailman/listinfo/sumo-user