Hi Ifezue,
do you know the article
Araya, Shinji; Sone, S., "Traffic Dynamics of Automated Transit Systems
with Pre-established Schedules", /IEEE Transactions on Systems, Man and
Cybernetics/, *14*(*4*), pp. 677-687 (1984).
It has a simple algorithmus to make the stops longer, if the gap to the
following vehicle of the same line becomes larger.
If you browse the internet for "Araya Sone 1984 Traffic Dynamics" you
find a lot of articles dealing with your issue.
I think, the decision to extend the stopping time or slowing should be
made at the stops. To look 50m ahead is too late.
Regards, Harald
Am 13.10.21 um 19:29 schrieb Ifezue Obiako:
Thank you Harald. This helped a lot. However, that is the thing. I am
trying to create enough headway between the buses so that they are not
bunching up together and servicing bus stops one after the other.
Based on the bus system that I have seen in reality, slowing down the
following bus is typically what is done during bus operations, and
they try to keep a 4-7 min headway between each bus so that one
doesn't run into the other along each route. That was the idea behind
putting such a large number for the slow down duration.
It was either using the "traci.vehicle.slowdown" method or the
"traci.vehicle.openGap" method. I thought using the
"traci.vehicle.slowdown" method would be more appropriate since it
forces the intended vehicle to slow down and maintain a desired
headway between buses. What are your thoughts on this?
On Wed, Oct 13, 2021 at 3:36 AM Harald Schaefer <[email protected]
<mailto:[email protected]>> wrote:
Hi Ifezue,
with some slight modifications both batterie request and slowDown
in your script works fine
leader ('6', 39.15839766767725)
14516 Slowdown vehicle 5 with current speed 5.8
leader ('6', 33.86887170421031)
14517 Slowdown vehicle 5 with current speed 5.3
leader ('6', 29.05112082833128)
14518 Slowdown vehicle 5 with current speed 4.8
leader ('6', 25.030976798088826)
14519 Slowdown vehicle 5 with current speed 4.0
leader ('6', 21.36720949786841)
14520 Slowdown vehicle 5 with current speed 3.7
leader ('6', 18.027421043122573)
14521 Slowdown vehicle 5 with current speed 3.3
leader ('6', 14.982158811535452)
14522 Slowdown vehicle 5 with current speed 3.0
leader ('6', 12.2046476919108)
14523 Slowdown vehicle 5 with current speed 2.8
leader ('6', 9.670546674070202)
14524 Slowdown vehicle 5 with current speed 2.5
leader ('6', 7.357727566942389)
14525 Slowdown vehicle 5 with current speed 2.3
leader ('6', 5.246073833189829)
14526 Slowdown vehicle 5 with current speed 2.1
leader ('6', 3.333195595135593)
14527 Slowdown vehicle 5 with current speed 1.9
leader ('6', 2.0003173570813555)
14528 Slowdown vehicle 5 with current speed 1.3
leader ('6', 1.200590414248813)
14529 Slowdown vehicle 5 with current speed 0.8
leader ('6', 0.7207542485492882)
14530 Slowdown vehicle 5 with current speed 0.5
leader ('6', 0.4328525491295725)
14531 Slowdown vehicle 5 with current speed 0.3
leader ('6', 0.26011152947774363)
14532 Slowdown vehicle 5 with current speed 0.2
leader ('6', 0.15646691768664578)
100 secs is a long time to increase the distance between two
vehicles close to each other, i have chosen 10 sec
In your battery stuff you should query the vehicle, not the
vehicleType.
Regards, Harald
Am 13.10.21 um 02:57 schrieb vincentobiako:
Hello Everyone
I am fairly new to Python and SUMO. I have a bus route, referred
to as a Green Bus Route, that is running in SUMO. This bus route
has two buses on its line/route and somehow these buses manage to
get bunched up together, offering no headway between the two
vehicles. I am currently trying to solve this issue by having the
follower bus slow down for some time so that it can get some
adequate headway between it and the leading bus. In order to
this, I am having the following bus “detect” the lead bus through
the traci.vehicle.getLeader() method and having the bus slow down
with traci.vehicle.slowDown() method. /However, when I run my
script in the simulation, the simulation runs with no errors, but
the green buses don’t seem to do what I had intended them to do
in the Python script./
I have attached some test files to this email for reference to
clear up any confusion. Please refer to the Python function named
“maintain_headway” for where this issue seems to be occurring.
Thanks for the help in advance
Ifezue
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for Windows
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