Analysis of the interaction between travel demand and rail capacity constraints
WIT Transactions on the Built Environment 128, pp.197-207 - 2012
In urban contexts, the adoption of policies to promote the use of public transport systems represents a useful tool... more
In urban contexts, the adoption of policies to promote the use of public transport systems represents a useful tool for decision-makers to reduce the environmental impact of private car use. Especially in high-density contexts most travel demand can be satisfied efficiently by means of high-quality rail systems. However, in the event of breakdowns, since faulty trains cannot usually be overtaken and their removal could pose extreme difficulties especially in metropolitan systems with two separate tunnels, re-establishing the regular service could involve inconveniently long travel times. Hence emergency management has to take into account effects on travel demand. In this framework, we analyse such effects for different levels of degraded services in order to define the best strategy to adopt to minimise user discomfort. We extend ideas proposed elsewhere in the literature by introducing capacity constraints of rail vehicles in order to provide more realistic simulated effects. Finally, we describe the application of the proposed approach in the case of the Naples metro system.
Keywords: travel demand analysis, traffic assignment models, capacity constraints, rail passenger systems, public transport management, microsimulation approach.
Analysis of the interaction between travel demand and rail capacity constraints
WIT Transactions on the Built Environment 128, pp.197-207 - 2012
In urban contexts, the adoption of policies to promote the use of public transport systems represents a useful tool... more
In urban contexts, the adoption of policies to promote the use of public transport systems represents a useful tool for decision-makers to reduce the environmental impact of private car use. Especially in high-density contexts most travel demand can be satisfied efficiently by means of high-quality rail systems. However, in the event of breakdowns, since faulty trains cannot usually be overtaken and their removal could pose extreme difficulties especially in metropolitan systems with two separate tunnels, re-establishing the regular service could involve inconveniently long travel times. Hence emergency management has to take into account effects on travel demand. In this framework, we analyse such effects for different levels of degraded services in order to define the best strategy to adopt to minimise user discomfort. We extend ideas proposed elsewhere in the literature by introducing capacity constraints of rail vehicles in order to provide more realistic simulated effects. Finally, we describe the application of the proposed approach in the case of the Naples metro system.
Keywords: travel demand analysis, traffic assignment models, capacity constraints, rail passenger systems, public transport management, microsimulation approach.
What is infrastructure made of? - a series
by Luke Bennett
An ongoing series that is probing the relationship between the materiality of the built environment and its... more An ongoing series that is probing the relationship between the materiality of the built environment and its service-providing systems and the cultural practices that ride alongside those physical 'things'. Blog-essays to date have included rumination on the definition of infrastructure, the imperatives of mobility in the face of railway suicides, metal theft's infrastructural impacts and the design drawing vs the as built motorway. All quite speculative at this stage - but nudging me somewhere.
'Second Nature'
Catalogue of ‘Second Nature’ joint solo exhibitions 14-31 March 2012 co-authored with Lorena Carrington Stephen McLaughlan Gallery Melbourne, Level 8 Nicholas Building 37 Swanston St, Melbourne.
Two artists question assumptions about nature with second thoughts about what constitutes or reveals the... more
Two artists question assumptions about nature with second thoughts about what constitutes or reveals the ‘natural’...
Lorena Carrington photographs the miniature landscape of the terrarium; an out-of-scale world environment for human and other organisms.
Fragile child figures are entangled in the constructed garden. They tell stories from mythic idealist concepts of landscape against the background of our disrupted connections with ‘nature’, and our increasing absence from it.
James McArdle recreates the fleeting travellers’ intuition of a fugitive, lost garden occupying the margins of railways and highways.
‘Motion perspective’ is seen in the phenomenon of the moon appearing to follow us as we move by. In ‘live’ vision, concentration on other elements in the mid- or fore-ground renders them as still points embedded within a rotating ‘flow’ of largely subconscious visceral sensation.
Still images can condense space with time to represent motion perspective. The observer’s trace in these ‘wild’ locations of furious motion and interposed stillness can thus be inferred within the surrounding blurred motion, producing a visceral sense of dimension and presence.
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Seen by:Denkmalwürdige Verkehrslandschaft Gotthard
Mit der Eröffnung des Gotthard-Basistunnels 2017 werden sich die Verkehrswege am Gotthard entscheidend verändern. In der Debatte, wie sich die Regionen beidseits des Passes weiterentwickeln sollen, wird dies zu wenig berücksichtigt.
The transportation landscape around the St. Gotthard pass is unique in its connection with nation building and the... more The transportation landscape around the St. Gotthard pass is unique in its connection with nation building and the Swiss national identity. The railway line opened in 1882 changed the perception of Switzerland. In Europe Switzerland became the most important transit service provider through the Alps. Within Switzerland the perception changed from being an Alpine republic to the Gotthard state. The transportation landscape distinguish itself with at great numbr of outstanding historical monuments which are in an authentic historical status.
Verification of intelligent fuzzy mechanism control strategy using 9 DOF complex tilting railway vehicle model
H.Zamzuri, A.C.Zolotas and R.M.Goodall, presented at 2011 IEEE International Conference on Intelligent Computing and Intelligent Systems (ICIS 2011), 18 - 20 Nov 2011 , Guanzhou, China
Active suspensions are widely used in railway vehicles
to improve overall performance. Moreover, the use of... more
Active suspensions are widely used in railway vehicles
to improve overall performance. Moreover, the use of tilt
technology in high speed trains not only provides ride comfort
to the passenger but also reduces journey time, which is the
main commercial advantage of using tilt control technology.
Current technology uses precedence control strategy in which
the tilt command is derived from an accelerometer mounted on
the front car bogie. A tilt control system based on local sensor
measurement can still provide simpler and more straightforward
approach in terms of fault tolerance and design. The combination
of fuzzy logic and conventional tilt controller design provided
an improvement to the overall performance. The design of the
controller was based on simple end-view model. This paper review the work on validation of the proposed control strategy using a 9 dof tilting railway vehicle
‘Steam of Consciousness’: Technology and Sensation in Dickens’ Railway Sketches
by Alf Seegert
Published in 'Philament,' SENSE & SENSATION – August 2009.
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