| 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
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
Am Mi., 30. Dez. 2020 um 20:10 Uhr schrieb <Maria.Armellini@xxxxxx>:
_______________________________________________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
Von: sumo-user-bounces@xxxxxxxxxxx <sumo-user-bounces@xxxxxxxxxxx> Im Auftrag von John
Gesendet: Dienstag, 29. Dezember 2020 17:09
An: Sumo project User discussions <sumo-user@xxxxxxxxxxx>
Betreff: 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 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?
Regards,
John
Sent from my iPad
On Dec 29, 2020, at 7:10 AM, Maria.Armellini@xxxxxx wrote:
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.
<image006.png>
As for the error message, have you checked that the vClass of your vehicle “BUS65I1” is “bus”?
Regards,
Giuliana
Von: sumo-user-bounces@xxxxxxxxxxx <sumo-user-bounces@xxxxxxxxxxx> Im Auftrag von John Doggett
Gesendet: Samstag, 26. Dezember 2020 19:48
An: sumo-user@xxxxxxxxxxx
Betreff: [sumo-user] Two Problems: Traffic only travels on one lane of a two lane road and Restricted Bus Lane produces error with Bus stop
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.
<image007.png>
<image008.png>
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:
<image005.png>
Any advice to fix these two problems?
Regards,
John
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