Dear all, I am pretty active in simulations today and observed many
collisions in my traffic scenario. So I looked at a simple network
with a single junctions when exposed to a reasonable traffic flow.
For the sumo simulation, I switched on the collision.check-junctions
option. As a result, I got 8 collisions per hour at a single 4-leg
priority junction (with a total of 750 vehicles/h entering from 2
perpendicular legs).
When I created vehicle rows (or platoons) by just setting speedDev to a
large value (speedDev="0.5", all other parameters are default) then I
got even 25 collisions per hour. I observed that in this case, vehicle
rows occur and collisions happen when such vehicle rows enter the junction.
I tried to impose more discipline by using a stop_priority junction.
But also in this case many collision occurred.
Are these collisions due to an over-sensible detection or is there a way
avoiding them? I have already tweaked my vehicle parameters to the most
cautious setting (infinite impatience, optimum driver skill).
Any thoughts?
Best wishes,
Joerg
--
Joerg Schweizer
University of Bologna
DICAM - Transportation Group
Viale Risorgimento, 2, I-40136 Bologna, Italy
Tel: +39 051 209 3338, Fax: +39 051 209 3337
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