A. Horni and K.W. Axhausen IVT, ETH Zürich GRIDLOCK MODELING WITH MATSIM
MOTIVATION gridlocks only roughly covered in current version of microsimulations e.g., MATSim models average working day traffic + relevance/risk of gridlocks (?)
context: joint seed project VPFW ETH analyze “gridlock” events (Zürich 2013, Aargau 2014) MATSim simulation experiments -network level -impedance components (e.g., look at intersections) extend solid base of gridlock modeling for aggregate transport modeling e.g., gridlocks and network-level MFDs (Geroliminis, Daganzo, …) -microsimulation modeling -gridlock characteristics PROCEEDING
METHOD MATSim simulation experiments output execution replanning scoring input plan utils
METHOD Zürich scenario -full population -navigation net -car mode simulated simulation configuration -relaxed state normal conditions -tunnels blockage due to truck accident :30 -within-day rerouting with increasing replanning range analysis based on city count data to begin with -10. / 16. / 17. / 18. / 25. of April 2013
RESULTS link storage capacity, a.k.a. jam density normal state blocked state
RESULTS link storage capacity, a.k.a. jam density
RESULTS
link storage capacity, a.k.a. jam density
RESULTS
blocked state sim counts
RESULTS Bucheggplatz morning rush hour
RESULTS impedance modeling: missing components -intersection dynamics: signals, priority rules, … -mode interactions: crosswalks, lane merging, … -driver behavior: slow drivers, driveaway delays, parking searchers, … -road geometry network modeling & its influence on the simulation dynamics
RESULTS issues with link storage capacity, … jam density
CONCLUSIONS & FUTURE WORK inspection -microsimulation (MATSim) capability to simulate gridlocks -relevance/risk of gridlocks and concise definition -gridlock characteristics more and more suitable data -police department ZH, … other events -Aargau Zug Chur 2014 impedance modeling issues -missing components, intersections -storage capacity