Metric properties of discrete time exclusion type processes in continuum

TL;DR

This paper introduces a new class of continuum exclusion processes with synchronous updates, analyzing their ergodic velocities, connections to particle density, and applications to traffic flow modeling using a novel dynamical coupling approach.

Contribution

It presents a new continuum exclusion process model and a unique dynamical coupling method to analyze particle velocities and densities, bridging continuum and lattice systems.

Findings

Derived ergodic average velocities of particles.

Established rigorous connections to the Fundamental Diagram.

Applied results to traffic flow modeling.

Abstract

A new class of exclusion type processes acting in continuum with synchronous updating is introduced and studied. Ergodic averages of particle velocities are obtained and their connections to other statistical quantities, in particular to the particle density (the so called Fundamental Diagram) is analyzed rigorously. The main technical tool is a "dynamical" coupling applied in a nonstandard fashion: we do not prove the existence of the successful coupling (which even might not hold) but instead use its presence/absence as an important diagnostic tool. Despite that this approach cannot be applied to lattice systems directly, it allows to obtain new results for the lattice systems embedding them to the systems in continuum. Applications to the traffic flows modelling are discussed as well.