EN 14531-1:2015/prA1:2016
(Amendment)Railway applications - Methods for calculation of stopping and slowing distances and immobilization braking - Part 1: General algorithms utilizing mean value calculation for train sets or single vehicles
Railway applications - Methods for calculation of stopping and slowing distances and immobilization braking - Part 1: General algorithms utilizing mean value calculation for train sets or single vehicles
This European Standard describes general algorithms for the brake performance calculations to be used for all types of train sets, units or single vehicles, including high speed, locomotive and passenger coaches, conventional vehicles and wagons.
This European Standard does not specify the performance requirements. It enables the estimation and/or comparison by calculation of the various aspects of the performance: stopping or slowing distances, dissipated energy, power, force calculations and immobilization braking.
If it is required to validate, verify or assess braking performance it is recommended that a more detailed calculation is performed in accordance with FprEN 14531-2, i.e. a step by step calculation.
This European Standard contains generic examples of the calculation of brake forces for individual brake equipment types and calculation of stopping distance and immobilization braking relevant to a train (see Annexes C and D).
Bahnanwendungen - Verfahren zur Berechnung der Anhalte- und Verzögerungsbremswege und der Feststellbremsung - Teil 1: Allgemeine Algorithmen für Einzelfahrzeuge und Fahrzeugverbände unter Berücksichtigung von Durchschnittswerten
Applications ferroviaires - Méthodes de calcul des distances d'arrêt, de ralentissement et d'immobilisation - Partie 1 : Algorithmes généraux utilisant le calcul par la valeur moyenne pour des rames ou des véhicules isolés
Železniške naprave - Metode za izračun zavornih poti pri ustavljanju in upočasnjevanju ter zavarovanje stoječih vozil - 1. del: Splošni algoritmi, ki temeljijo na izračunu srednje vrednosti za vlakovne kompozicije ali posamezna vozila
General Information
Relations
Overview
EN 14531-1:2015/prA1:2016 is a European Standard established by CEN specifically for railway applications. It focuses on the methods for calculating stopping and slowing distances and immobilization braking for various types of trains and single rail vehicles. This part 1 of the standard introduces general algorithms utilizing mean value calculations that apply to train sets, locomotives, passenger coaches, conventional vehicles, and wagons. The standard is designed to enable engineers and railway operators to estimate and compare braking performance aspects effectively, although it does not define specific brake performance requirements.
Key Topics
- General algorithms for brake calculations: The standard provides a unified approach to calculating braking performance metrics using mean value calculations, making it applicable to different vehicle configurations.
- Stopping and slowing distances: It outlines computational methods to estimate how far a train or vehicle travels from brake application to a full stop or a reduced speed.
- Immobilization braking: Methods for calculating the braking force necessary to hold a train stationary, important for safety in parking or emergency conditions.
- Calculation of brake forces: Includes generic examples of brake force estimation for various brake equipment types as detailed in the annexes, assisting in practical application.
- Dynamic and static coefficients of friction: Specifies procedures for determining mean dynamic and static friction coefficients critical for accurate braking calculations, referencing relevant dynamometer tests and related standards such as EN 16452.
- Energy and power considerations: Enables estimation of dissipated energy and power involved in braking processes, supporting energy management and system design.
Applications
This standard is highly relevant for:
- Railway engineers and designers: To perform preliminary assessments of braking systems for new trains or vehicles, especially when comparing different designs or system updates.
- Safety analysts: Aiding in risk assessments by understanding stopping distances and immobilization capabilities under various operating conditions.
- Rail operators: Planning braking strategy and emergency preparedness on track sections, considering different vehicle types including high-speed trains.
- Maintenance and testing teams: Providing fundamental algorithms to support validation of braking system performance prior to more detailed, step-by-step calculations as recommended in EN 14531-2.
- Regulatory compliance: Assisting in demonstrating alignment with European Commission directives on railway safety by offering standardized calculation methods.
Related Standards
- EN 14531-2: Provides detailed step-by-step braking calculation methods for validation and verification, complementing the general algorithms in Part 1.
- EN 16452: Relates to dynamometer tests used to determine friction coefficients for brake blocks, referenced for friction data in EN 14531-1.
- UIC 541-3: An interim reference for brake pad testing methods used until the publication of prEN 15328, which will cover brake pad standards comprehensively.
- EU Directive 2008/57/EC: EN 14531-1 supports essential safety requirements outlined in this European railway interoperability directive.
By standardizing the approach to braking calculations, EN 14531-1:2015/prA1:2016 plays a crucial role in enhancing safety, efficiency, and interoperability within the European railway system. Utilizing these algorithms supports rail industry professionals in delivering reliable and consistent braking performance analysis.
Frequently Asked Questions
EN 14531-1:2015/prA1:2016 is a draft published by the European Committee for Standardization (CEN). Its full title is "Railway applications - Methods for calculation of stopping and slowing distances and immobilization braking - Part 1: General algorithms utilizing mean value calculation for train sets or single vehicles". This standard covers: This European Standard describes general algorithms for the brake performance calculations to be used for all types of train sets, units or single vehicles, including high speed, locomotive and passenger coaches, conventional vehicles and wagons. This European Standard does not specify the performance requirements. It enables the estimation and/or comparison by calculation of the various aspects of the performance: stopping or slowing distances, dissipated energy, power, force calculations and immobilization braking. If it is required to validate, verify or assess braking performance it is recommended that a more detailed calculation is performed in accordance with FprEN 14531-2, i.e. a step by step calculation. This European Standard contains generic examples of the calculation of brake forces for individual brake equipment types and calculation of stopping distance and immobilization braking relevant to a train (see Annexes C and D).
This European Standard describes general algorithms for the brake performance calculations to be used for all types of train sets, units or single vehicles, including high speed, locomotive and passenger coaches, conventional vehicles and wagons. This European Standard does not specify the performance requirements. It enables the estimation and/or comparison by calculation of the various aspects of the performance: stopping or slowing distances, dissipated energy, power, force calculations and immobilization braking. If it is required to validate, verify or assess braking performance it is recommended that a more detailed calculation is performed in accordance with FprEN 14531-2, i.e. a step by step calculation. This European Standard contains generic examples of the calculation of brake forces for individual brake equipment types and calculation of stopping distance and immobilization braking relevant to a train (see Annexes C and D).
EN 14531-1:2015/prA1:2016 is classified under the following ICS (International Classification for Standards) categories: 45.060.01 - Railway rolling stock in general. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 14531-1:2015/prA1:2016 has the following relationships with other standards: It is inter standard links to EN 14531-1:2015+A1:2018, EN 14531-1:2015. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 14531-1:2015/prA1:2016 is associated with the following European legislation: EU Directives/Regulations: 2008/57/EC; Standardization Mandates: M/483. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2017
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Railway applications - Methods for calculation of stopping and slowing distances and
immobilization braking - Part 1: General algorithms utilizing mean value calculation for
train sets or single vehicles
Bahnanwendungen - Verfahren zur Berechnung der Anhalte- und
Verzögerungsbremswege und der Feststellbremsung - Teil 1: Allgemeine Algorithmen für
Einzelfahrzeuge und Fahrzeugverbände unter Berücksichtigung von
Durchschnittswerten
Applications ferroviaires - Méthodes de calcul des distances d'arrêt, de ralentissement et
d'immobilisation - Partie 1 : Algorithmes généraux utilisant le calcul par la valeur
moyenne pour des rames ou des véhicules isolés
Ta slovenski standard je istoveten z: EN 14531-1:2015/prA1:2016
ICS:
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
EN 14531-1:2015
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
December 2016
ICS 45.060.01
English Version
Railway applications - Methods for calculation of stopping
and slowing distances and immobilization braking - Part 1:
General algorithms utilizing mean value calculation for
train sets or single vehicles
Applications ferroviaires - Méthodes de calcul des Bahnanwendungen - Verfahren zur Berechnung der
distances d'arrêt, de ralentissement et Anhalte- und Verzögerungsbremswege und der
d'immobilisation - Partie 1 : Algorithmes généraux Feststellbremsung - Teil 1: Allgemeine Algorithmen für
utilisant le calcul par la valeur moyenne pour des Einzelfahrzeuge und Fahrzeugverbände unter
rames ou des véhicules isolés Berücksichtigung von Durchschnittswerten
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 256.
This draft amendment A1, if approved, will modify the European Standard EN 14531-1:2015. If this draft becomes an
amendment, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
inclusion of this amendment into the relevant national standard without any alteration.
This draft amendment was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turke
...
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