Diesel Multiple Units in 21st Century North America: Comparative Survey and Evaluation of Services, Demand, and Cost

2017 ◽  
Vol 2648 (1) ◽  
pp. 42-50
Author(s):  
David O. Nelson ◽  
Tara N. Blakey ◽  
Katherine K. O’Neil
Keyword(s):  
21St Century ◽  
Rolling Stock ◽  
Light Rail ◽  
Commuter Rail ◽  
Electric Light ◽  
Self Powered ◽  
Survey And Evaluation ◽  
Reported Data ◽  
Multiple Units ◽  
Rail Services

U.S. officials working with finite resources to build and operate new fixed-guideway transit services grow more creative every year, finding ways to offer new and expanded services with fixed or declining resources. One creative approach to the development of new urban passenger rail services has been to operate on tracks shared with light-density freight services. Most services have used conventional commuter rail passenger rolling stock for these services, but, in some circumstances, this relatively heavy equipment has been inappropriate, and officials have been forced to consider sharing freight tracks with lighter, shorter trains. Some of these trains have been conventional electric light rail cars, but since the turn of the 21st century, five new U.S. services using self-powered diesel rail cars (historically called diesel multiple units, or DMUs) have opened to offer new travel options in Texas, California, New Jersey, and Oregon. FTA has termed these new shared-track DMU services “hybrid rail.” This paper reviews the circumstances and conditions that gave rise to the development of these hybrid DMU systems. The paper then reports the results of a study that used federally reported data to conduct a survey and evaluation of these services as compared with electric light rail and conventional commuter rail services. The analysis found that the new DMU systems tended to function in a new service stratum between commuter and light rail that served the needs of markets that neither of those traditional modes was well suited to address.

scholarly journals Visions of a polycentric suburb : the evolution of car-centric design

2021 ◽  
Author(s):  
Mark Siemicki
Keyword(s):  
Urban Sprawl ◽  
High Speed ◽  
Light Rail ◽  
High Speed Rail ◽  
Southern Ontario ◽  
Commuter Rail ◽  
Suburban Cities ◽  
Emerging Issues ◽  
Rail Rapid Transit ◽  
Globalized World

The following thesis investigates emerging issues surrounding car-centric design know as urban sprawl and questions whether or not it is feasible and appropriate for cities to continue sprawling in a car-centric manner given changing conditions. Social, political, environmental and economical concerns have surfaced putting a damper on the once great "American Dream" raising concerns that car-centric design can prove detrimental to humanity. The roots of modernist design are discussed and the ideas behind modernists' intentions analyzed while juxtaposing modernist vision to the real outcomes of modernism. Modernist ideas are compared and contrasted to new and old theories that challenge the modernist ideals in order to propose a new direction for future urban development. The design project takes into account the importance of connection and network through infrastructure in a globalized world. Transit infrastructure (high speed rail, improved commuter rail, rapid transit and light rail) is proposed on a number of scales in the Southern Ontario region to act as a catalyst for responsible growth interconnecting future intensified polycentric suburban cities.

scholarly journals Electrified lines entering tunnels in Poland, safety aspects of the running with fire

2018 ◽  
Vol 180 ◽  
pp. 05003
Author(s):  
Marek Pawlik
Keyword(s):  
Risk Evaluation ◽  
Technical Specification ◽  
Point Of View ◽  
Fire Fighting ◽  
Rolling Stock ◽  
European Standard ◽  
Railway Network ◽  
Operational Safety ◽  
Different Types ◽  
Multiple Units

Potential fire on board of the passenger train creates risk for passengers health and passengers life. Using non-flammable materials for producing Electric Multiple Units (EMUs) is not considered to be sufficient as passengers are carrying different types of materials as their luggage and belongings. In case of fire on board of the train, the EMU should stop in a place which is appropriate for passengers evacuation and fire fighting. Not all places along railway lines are considered to be appropriate for such purpose. Especially stopping in tunnels is considered inappropriate. Meanwhile the amount of tunnels on the Polish railway network is growing significantly. This requires application of the Technical Specification for Interoperability regarding Safety in Railway Tunnels (TSI SRT) and set of fire standards EN 45545. Using those requirements is associated with putting tunnels and rolling stock into service under railway interoperability directive 2008/57/WE. Additional analyse is however necessary from operational safety point of view due to growing amount of tunnels and growing diversity of rolling stock. Paper proposes conducting risk analyse in accordance with common safety method for risk evaluation and assessment based on a dedicated European Standard EN 50533 which defines requirements regarding running capability in case of fire on board of the rolling stock. Paper analyses applicability of that approach for group of tunnels and rolling stock fleet comprising different types of rolling stock including Electric Multiple Units.

Contracting Commuter Rail Services, Volume 2: Commuter Rail System Profiles

2018 ◽  
Author(s):  
Linda Cherrington ◽  
Allan Rutter ◽  
Curtis Morgan ◽  
Emmanuel S. “Bruce” Horowitz ◽  
James Stoetzel ◽  
...  
Keyword(s):  
Commuter Rail ◽  
Rail System ◽  
Rail Services

scholarly journals Indonesian experience on travel time use on-board of commuter rail services

2017 ◽  
Vol 25 ◽  
pp. 2705-2716 ◽  
Author(s):  
Yosritzal ◽  
Bayu Martanto Adji ◽  
Dilum Dissanayake
Keyword(s):  
Travel Time ◽  
Time Use ◽  
Commuter Rail ◽  
Rail Services

Analysis of Performance Characteristics in Deteriorated Subway Rolling Stock

2007 ◽  
Vol 353-358 ◽  
pp. 2766-2769
Author(s):  
Jeong Guk Kim ◽  
Sung Cheol Yoon ◽  
Sung Tae Kwon ◽  
Jung Won Seo ◽  
Kyung Taek Park
Keyword(s):  
Reference Value ◽  
Performance Characteristics ◽  
Rolling Stock ◽  
Performance Tests ◽  
Braking Performance ◽  
Overall Evaluation ◽  
Performance Deterioration ◽  
Performance Results ◽  
Analysis Of Performance ◽  
Multiple Units

In order to investigate performance characteristics of deteriorated subway rolling stocks, several engineering assessment methods, such as the acceleration, vibration, and braking performance tests, were carried out on subway electric multiple units (EMUs) with over 20 years operation. According to the testing results, in vibration and braking performance of EMUs, the similar performance results were obtained as compared with newly manufactured EMUs. However, in terms of acceleration performance characteristic, below reference value (3.0 km/h/s) has been obtained. This is mainly due to performance deterioration of EMUs including traction motor. In this investigation, the results on precision diagnosis evaluation of deteriorated EMUs were provided through the overall evaluation of corrosion testing and structural performance of car body in subway EMUs.

scholarly journals Methodical basis for comparative analysis of rolling stock modernization economic effectiveness

2017 ◽  
Vol 2017 (7) ◽  
pp. 34-40
Author(s):  
Juliusz Engelhardt
Keyword(s):  
Feasibility Studies ◽  
Economic Effectiveness ◽  
Rolling Stock ◽  
Discounted Cash Flow ◽  
Transport Efficiency ◽  
Current Topic ◽  
Methodical Basis ◽  
Discounted Cash Flow Method ◽  
Multiple Units ◽  
Annual Transport

The article is dedicated to the analytical and methodological issues related to the economic effectiveness appraisal of rolling stock modernization. It is a very current topic because rail carriers often take up decision on comprehensive modernization of the rolling stock, especially locomotives, passenger carriages and multiple units. There was pointed out in the article the necessity of conduction of rolling stock modernization feasibility studies considering three different assumptions: a) assuming the same annual transport efficiency and expecting benefits at the exploitation costs side, b) assuming the same exploitation costs of the new and modernized carriage and expecting benefits at the transport efficiency side, c) assuming varied exploitation costs and varied transport efficiency of the new and modernized rolling stock. Feasibility study should be conducted by the means of discounted cash flow method - increase version, because that method allows best to capture the benefits resulting from the rolling stock modernization.

scholarly journals Effects of Light and Commuter Rail Transit on Land Prices: Experiences in San Diego County

2010 ◽  
Author(s):  
Robert Cervero
Keyword(s):  
Traffic Congestion ◽  
San Diego ◽  
San Diego County ◽  
Land Values ◽  
Light Rail ◽  
Hedonic Price ◽  
Single Family ◽  
Multifamily Housing ◽  
The North ◽  
Commuter Rail

Using hedonic price models, appreciable land-value premiums were found for multiple land uses in different rail corridors of San Diego County. The most appreciable benefits were for condominiums and single-family housing near commuter-rail stations in the north county, multifamily housing near light-rail stations, and commercial properties near downtown commuterrail stations and light-rail stops in the Mission Valley. Elsewhere, commercial properties accrued small or even negative capitalization benefits. Pro-development policies, worsening traffic congestion, and a generally healthy economy are thought to have generally boosted land values in San Diego County, though impacts are corridor- and land-use specific.

Contracting Commuter Rail Services, Volume 1: Guidebook

2018 ◽  
Author(s):  
Linda Cherrington ◽  
Allan Rutter ◽  
Curtis Morgan ◽  
Emmanuel S. “Bruce” Horowitz ◽  
James Stoetzel ◽  
...  
Keyword(s):  
Commuter Rail ◽  
Rail Services
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