A. Horni and K.W. Axhausen IVT, ETH Zürich

GRIDLOCK MODELING WITH MATSIM

MOTIVATION

• gridlocks only roughly covered in current version of microsimulationse.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 modelinge.g., gridlocks and network-level MFDs (Geroliminis,

Daganzo, …)- microsimulation modeling- gridlock characteristics

PROCEEDING

METHOD• MATSim simulation experiments

outputoutput

executionexecution

replanningreplanning

scoringscoring

inputinput

planplanplanplan

planplan

planplan

planplan utils

METHOD• Zürich scenario

- full population- navigation net- car mode simulated

• simulation configuration- relaxed state normal conditions- tunnels blockage due to truck accident 17.04.2013

15:30- 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 densitynormal state

blocked state

RESULTS• link storage capacity, a.k.a. jam density

RESULTS

RESULTS• link storage capacity, a.k.a. jam density

RESULTS

RESULTS

blocked state

simcounts

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

RESULTSissues 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 2014- Zug 2011- Chur 2014

• impedance modeling issues- missing components, intersections- storage capacity