title: Synchronized flow in oversaturated city traffic.
abstract: Based on numerical simulations with a stochastic three-phase traffic flow model, we reveal that moving queues (moving jams) in oversaturated city traffic dissolve at some distance upstream of the traffic signal while transforming into synchronized flow. It is found that, as in highway traffic [Kerner, Phys. Rev. E 85, 036110 (2012)], such a jam-absorption effect in city traffic is explained by a strong driver's speed adaptation: Time headways (space gaps) between vehicles increase upstream of a moving queue (moving jam), resulting in moving queue dissolution. It turns out that at given traffic signal parameters, the stronger the speed adaptation effect, the shorter the mean distance between the signal location and the road location at which moving queues dissolve fully and oversaturated traffic consists of synchronized flow only. A comparison of the synchronized flow in city traffic found in this Brief Report with synchronized flow in highway traffic is made.
authors: Physik von Transport und Verkehr, Universität Duisburg-Essen, 47048 Duisburg, Germany.
authors: Boris S
authors: BS
authors: Kerner
authors: Department of Physics, Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Moscow Region, Russia.
authors: Sergey L
authors: SL
authors: Klenov
authors: Physik von Transport und Verkehr, Universität Duisburg-Essen, 47048 Duisburg, Germany.
authors: Gerhard
authors: G
authors: Hermanns
authors: Daimler AG, GR/PT, HPC: G021, 71059 Sindelfingen, Germany.
authors: Peter
authors: P
authors: Hemmerle
authors: Daimler AG, GR/PT, HPC: G021, 71059 Sindelfingen, Germany.
authors: Hubert
authors: H
authors: Rehborn
authors: Physik von Transport und Verkehr, Universität Duisburg-Essen, 47048 Duisburg, Germany.
authors: Michael
authors: M
authors: Schreckenberg