Effects Of Increased Traffic Volume And Speed
Heterogeneity On The Capacity Of A Railway With
Dense Mixed Traffic
Author(s)
J. Warg
Abstract
Increasing demand for train travel implies a need for improved traffic. More
frequent departures and new regional stops have to be coordinated with the
desire to shorten travel times for passengers and on the same line be mixed with
freight operations.
This paper analyses how increased traffic predicted for 2020 affects the capacity
of a 400-km section of the Southern Main Line in Sweden, a highly-utilised
double-track line with heterogeneous and dense traffic with low punctuality,
particularly as regards high-speed trains. In a second step, the consequences of
raising the maximum speed for high-speed trains from 200 to 250 km/h are
analysed. The purpose of the paper is to show the effects of these measures and
discuss strategies for improving punctuality and increasing timetable flexibility
based on the revealed weaknesses of the system by combining timetable analysis
and simulation.
The evaluation shows that an increase in traffic volume and speed differences
leads to a decrease in the flexibility and reliability of the timetable. The
punctuality of the high-speed trains becomes unacceptably low. The tested
approaches to normalise the effects of increased traffic and speed on flexibility
and punctuality are shown to be insufficient. Capacity utilisation on the line is so
high that recovery is not possible.
Keywords: railway operation, capacity, simulation, delay, timetable flexibility,
mixed traffic, Green Train, high-speed trains.
Keywords
railway operation, capacity, simulation, delay, timetable flexibility,mixed traffic, Green Train, high-speed trains
Related Book
Other papers in this volume
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