Comprehensive passenger demand-dependent traffic control on a metro line with a junction and a derivation of the traffic phases

TL;DR

This paper develops a dynamic traffic model for metro lines with junctions that incorporates passenger demand, extending existing models by including control laws for dwell and run times to optimize train scheduling.

Contribution

It introduces a comprehensive model that accounts for passenger demand and junction dynamics, extending previous models by integrating control laws for dwell and run times.

Findings

Phase diagram of train dynamics on a metro line with junctions.

Train headway and frequency depend on train numbers, branch differences, and passenger demand.

Model can be used for traffic control optimization.

Abstract

This paper is an extended abstract on a traffic model for the train dynamics on a metro line with a junction. The dynamic model includes control laws on the dwell and on the run time, taking into account the passenger travel demand. Our model extends two existing traffic models: 1. a model that describes the train dynamics on a metro line with a junction but without taking into account the travel demand, i.e. dwell and run times are fixed, and 2. another model that controls the train dynamics on a linear metro line (without junction) taking into account the passenger travel demand. We present the phase diagram of the train dynamics in the metro line with a junction. Train time-headway and frequency are functions of 1. the number of trains on the line, 2. the difference between the number of trains on the two branches, and 3. the passenger demand level. The derived diagram can be used for the optimization of the traffic control on the metro line and at the junction.