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BSI 22/30393016 DC:2022 Edition

BSI 22/30393016 DC:2022 Edition

$13.70

BS EN 12299. Railway applications. Ride comfort for passengers. Measurement and evaluation

Published By Publication Date Number of Pages
BSI 2022 86
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The purpose of this document is to provide methods for quantifying the ride comfort of a passenger in a rail vehicle in response to the track sections it is operated over. The methods aim to quantify the effects of vehicle body motions on ride comfort and to make the assessment of passenger comfort predictable, repeatable, objective and meaningful. The methods and comfort scales are validated for people of good health. This document applies to passengers in rail vehicles operating on heavy rail networks. This document may also be used as a guide for example on urban rail systems, but their operational routes/environments may make it difficult to comply with the requirements of the test methods. This document applies to measurements of motions. It also applies to simulated motions. Guidance is provided on: – which method described within the document should be used for different scenarios; – typical values for different comfort levels; – the application of simulation. This document excludes health and safety issues, non-passenger carrying vehicles, vehicle homologation and safety, limit values, motion sickness, discomfort caused by accelerating and braking, design guidelines and measurement technology.

PDF Catalog

PDF Pages PDF Title
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 Symbols, units and abbreviations
15 5 General description
5.1 General
5.2 Passenger exposure to vibrations
16 5.3 Application
5.4 Characteristics of rail vehicle motions
17 5.5 Ride comfort
5.6 Direct and indirect measurements
5.7 Summary table of procedures
18 5.8 Application of comfort indices
19 6 Mean comfort and continuous comfort
6.1 General
20 6.2 Basis of the method
6.3 Methodology
6.4 Test conditions
6.4.1 General
21 6.4.2 Selection of test sections
6.4.3 Test speed
6.4.4 Wheel-rail contact geometry
6.4.5 Vehicle condition
6.5 Parameters to be measured
6.5.1 General
6.5.2 Location of measuring points
22 6.5.3 Filtering
6.6 Definition of intermediate quantities
6.6.1 Symbols and indices
24 6.6.2 Rms-values of weighted accelerations
6.6.3 95th and 50th percentiles
25 6.7 Definition of comfort indexes
6.7.1 Continuous comfort
6.7.2 Mean comfort standard method
6.7.3 Mean comfort complete method
6.8 Test report
26 7 Comfort on Curve Transitions
7.1 General
7.2 Basis of the method
7.3 Methodology
27 7.4 Test conditions
7.4.1 General
7.4.2 Selection of test sections
7.4.3 Test speed
7.4.4 Wheel-rail contact geometry
7.4.5 Vehicle condition
7.5 Parameters to be measured
7.5.1 General
28 7.5.2 Location of measuring points
7.5.3 Filtering
7.6 Definition of intermediate quantities
7.6.1 Symbols and indices
7.6.2 Averaging procedure
29 7.6.3 Identification of transition periods
7.6.4 Intermediate quantities
7.7 Definition of comfort index
30 7.8 Alternative comfort index ‘sliding over 3 s’
31 7.9 Test report
7.10 Example diagrams
33 8 Comfort on Discrete Events
8.1 General
8.2 Basis of the method
8.3 Methodology
34 8.4 Test conditions
8.4.1 General
8.4.2 Selection of test sections
8.4.3 Test speed
8.4.4 Wheel-rail contact geometry
8.4.5 Vehicle condition
8.5 Parameters to be measured
8.5.1 General
8.5.2 Location of measuring points
35 8.5.3 Filtering
8.6 Definition of intermediate quantities
8.6.1 Symbols and indices
8.6.2 Averaging procedure
8.6.3 Intermediate quantities
36 8.7 Definition of comfort index
8.8 Test report
37 9 Guide for the interpretation of the results
9.1 General
9.2 Mean comfort
9.3 Continuous comfort
38 9.4 Comfort on curve transitions
9.5 Comfort on discrete events
40 Annex A (normative)Reference system
42 Annex B (normative)Measurement techniques
B.1 General
B.2 Measuring equipment
B.2.1 General
B.2.2 Accelerometers and processing amplifiers
43 B.2.3 Recording equipment
B.2.4 Fixing transducers to the floor
44 B.3 Seat measuring devices and their applications
47 Annex C (normative)Weighting curves
C.1 General
48 C.2 Filter functions
C.2.1 General
C.2.2 Band-limiting filter
49 C.2.3 Acceleration to velocity transition
C.2.4 Upward gradient
C.2.5 Overall frequency weighting
C.2.6 Reduction of the upper limit of the frequency range in vertical direction
50 C.3 Tolerances
52 C.4 Diagrams
55 Annex D (normative)Specifying the vehicle performance regarding to ride comfort
D.1 General
D.2 Knowledge of intended route for comfort prediction
D.3 Track specification
56 D.4 Vehicle specification
D.5 General specification
57 Annex E (normative)Vehicle assessment with respect to ride comfort
E.1 General
E.2 Track geometric quality
58 E.3 Test conditions
E.3.1 Selection of test sections and test zones
E.3.2 Test speed
E.3.3 Wheel-rail contact geometry
59 E.3.4 Vehicle condition
E.4 Acceptable modifications of the methods for the continuous or mean comfort evaluation
61 E.5 Test Report
62 Annex F (informative)Presentation of test report
F.1 General
F.2 Aim of test
F.3 Test performer
F.4 References
F.5 Test conditions
F.5.1 General information
63 F.5.2 Vehicle
F.5.3 Seat (for mean comfort complete method)
F.5.4 Seat occupant (for mean comfort complete method)
F.5.5 Track
64 F.5.6 Speed profile
F.5.7 Test configurations
F.6 Measurements and processing
F.6.1 Measurements
F.6.2 Processing
F.7 Report on mean comfort and continuous comfort
F.7.1 General
F.7.2 Time series
65 F.7.3 Statistical results
F.7.4 Comfort evaluation
F.7.5 Spectral analyses
70 F.8 Report on comfort in curve transitions
F.9 Reporting on comfort on discrete events
73 Annex G (informative)Guideline for the application of direct tests
74 Annex H (informative)Workflow for calculation of RMS values from measured (or simulated) time series of accelerations
75 Annex I (informative)Determining quantities
78 Annex J (informative)Guidance for the application of simulation
J.1 Introduction
J.2 Benefits
J.3 Applications
79 J.4 Accuracy and limitations
J.5 State of the art for railway ENs
81 Annex K (normative)Train set value for the mean comfort index
K.1 Train set value definition
K.2 Simple example

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BSI 22/30393016 DC
$13.70