SIST EN 50436-3:2017

Alcohol interlocks - Test methods and performance requirements - Part 3: Guidance for authorities, decision makers, purchasers and users

An alcohol interlock is a system comprising a breath alcohol measuring instrument and an immobiliser which may be easily installed in motor vehicles as passenger cars, coaches, taxis, hazardous goods transporters, lorries, trams, trains, motorcycles, boats, or snow mobiles. Before the vehicle motor can be started or the vehicle can be moved, a breath sample has to be provided to the alcohol interlock, normally through a mouthpiece. Once the breath alcohol measurement has been performed, the alcohol interlock will prevent drivers from starting the motor if they have an alcohol concentration above a predetermined limit value. This limit may be set at the legal limit of a respective country or lower.
Alcohol interlocks that meet the relevant European Standards detect, for example, if the sample is delivered by a human being. They are also capable of preventing and detecting tampering with the instrument.
Additional parts of the system may include identity checking or recording mechanisms.
The purpose of this European Standard is to give practical guidance for selection, installation, use and maintenance of alcohol interlocks. It is directed to all those who have an interest in alcohol interlocks as well as companies selling and installing alcohol interlocks, purchasers and users for commercial, professional or private use. The European Standard gives information about the alcohol interlock and how it is to be used.
This European Standard describes alcohol interlocks for use in vehicles as a general preventive measure in traffic safety as well as for use in drink driving offender programmes. However, information provided may also be useful for alcohol interlocks in other applications.

Alkohol-Interlocks - Prüfverfahren und Anforderungen an das Betriebsverhalten Teil 3: Leitfaden für Behörden, Entscheider, Käufer und Nutzer

Ein Alkohol Interlock ist ein aus einem Atemalkoholmessgerät und einer Wegfahrsperre bestehendes System, das sich ohne Schwierigkeiten in Motorfahrzeuge wie Personenkraftwagen, Busse, Taxis, Gefahrguttransporter, Lastwagen Straßenbahnen, Züge, Motorräder, Boote oder Schneemobile einbauen lässt. Bevor der Fahrzeugmotor gestartet oder das Fahrzeug bewegt werden kann, muss eine Atemprobe in das Alkohol Interlock abgegeben werden, was normalerweise durch ein Mundstück erfolgt. Sobald die Atemalkoholmessung erfolgt ist, hindert das Alkohol Interlock Fahrer am Starten des Motors, wenn ihre Alkoholkonzentration über einem vorher festgelegten Grenzwert liegt. Dieser Grenzwert kann auf den gesetzlich festgelegten Grenzwert eines jeweiligen Landes oder darunter eingestellt werden.
Alkohol Interlocks, die die zutreffenden Europäischen Normen erfüllen, erkennen z. B., ob die Probe von einem Menschen abgegeben wurde. Sie sind auch in der Lage, Manipulationen am Gerät zu verhindern und zu erkennen.
Zusatzteile des Systems können Einrichtungen zur Identitätsüberprüfung oder Aufzeichnungsvorrichtungen enthalten.
Zweck dieser europäischen Norm ist es, eine praktische Anleitung zu Auswahl, Einbau, Einsatz und Wartung von Alkohol Interlocks zu geben. Sie richtet sich an all jene, die an Alkohol Interlocks interessiert sind, an Firmen, die Alkohol Interlocks vertreiben und einbauen, sowie an Käufer und Nutzer beim gewerblichen, beruflichen als auch privaten Einsatz. Die europäische Norm liefert Informationen zum Alkohol Interlock und wie dieses Gerät anzuwenden ist.
Diese europäische Norm beschreibt Alkohol Interlocks zur Nutzung in Fahrzeugen als allgemein präventive Maßnahme für die Verkehrssicherheit sowie zur Nutzung in Programmen für Trunkenheitsfahrer. Die gegebenen Informationen können jedoch auch für Alkohol Interlocks in anderen Anwendungen von Nutzen sein.

Alcootests électroniques anti-démarrage - Méthodes d'essai et exigences de performance - Partie 3: Lignes directrices pour décideurs, acheteurs et utilisateurs

Un éthylotest antidémarrage est un système composé d'un appareil mesurant le taux d'alcoolémie de l'air expiré et d'un dispositif d'immobilisation qui peut être facilement installé dans les véhicules à moteur comme les véhicules de tourisme, les autocars, les taxis, les véhicules de transport de marchandises dangereuses, les camions, les tramways, les trains, les motos, les bateaux ou les motoneiges. Avant de pouvoir démarrer le moteur du véhicule ou de pouvoir déplacer le véhicule, un échantillon d'air expiré par le conducteur doit être fourni à l'éthylotest antidémarrage, en utilisant en règle générale un embout. Lorsque la mesure du taux d'alcoolémie de l'air expiré a été réalisée, l'éthylotest antidémarrage empêche les conducteurs de démarrer le moteur si leur concentration d'alcool est supérieure à une valeur limite prédéterminée. Cette limite peut être fixée à une valeur inférieure ou égale à la limite légale d'un pays donné.
Par exemple, les éthylotests antidémarrage qui satisfont aux Normes européennes applicables détectent si l'échantillon est fourni par un être humain. Ils peuvent également empêcher et détecter l'altération de l'appareil.
Des parties supplémentaires du système peuvent intégrer la vérification d'identité ou des mécanismes d'enregistrement.
La présente Norme européenne a pour objet de donner des préconisations pratiques pour le choix, l'installation, l'usage et la maintenance des éthylotests antidémarrage. Elle est destinée à toutes les parties intéressées par les éthylotests antidémarrage comme aux sociétés qui vendent et installent ces produits, aux acheteurs et aux utilisateurs pour un usage commercial, professionnel ou privé. La présente Norme européenne donne des informations sur les éthylotests antidémarrage et sur la manière dont ils doivent être utilisés.
La présente Norme européenne décrit les éthylotests antidémarrage destinés aux véhicules comme mesure de prévention générale de sécurité routière ainsi que ceux destinés aux programmes de lutte contre la conduite en état d'ivresse. Toutefois, les informations fournies peuvent également être utiles pour les éthylotests antidémarrage destinés à d'autres applications.

Alkoholne zapore - Preskusne metode in zahtevane lastnosti - 3. del: Navodilo za upravne organe, nosilce odločanja, kupce in uporabnike

Alkoholna zapora je sistem, ki je sestavljen iz instrumenta za merjenje alkohola v sapi in imobilizatorja, ki se lahko zlahka namesti v motorna vozila, kot so osebna vozila, avtobusi, taksiji, transporterji za nevarno blago, tovornjaki, tramvaji, vlaki, motorna kolesa, čolni ali snežne sani. Preden je motor vozila mogoče zagnati ali je vozilo mogoče premakniti, je treba v alkoholno zaporo vpihniti vzorec sape, in sicer običajno skozi ustnik. Ko je izvedena meritev alkohola v sapi, alkoholna zapora prepreči voznikom zagon motorja, če je koncentracija alkohola nad vnaprej določeno mejno vrednostjo. To omejitev se lahko nastavi na zakonsko določeno omejitev v zadevni državi ali nižje.
Alkoholne zapore, ki izpolnjujejo zahteve ustreznih evropskih standardov, zaznajo, ali je npr. vzorec vnesel človek. Poleg tega lahko zaznajo in preprečijo poseganje v instrument.
Dodatni deli sistema lahko zajemajo mehanizme za preverjanje identitete ali beleženje dejavnosti.
Namen tega evropskega standarda je ponuditi praktične smernice za izbiro, namestitev, uporabo in vzdrževanje alkoholnih zapor. Namenjen je vsem, ki jih zanimajo alkoholne zapore, podjetjem, ki prodajajo ter nameščajo alkoholne zapore, kupcem in uporabnikom za komercialno, profesionalno ali zasebno uporabo. Ta evropski standard podaja informacije o alkoholnih zaporah in njihovi uporabi.
Ta evropski standard opisuje alkoholne zapore za uporabo v vozilih kot splošni preventivni ukrep za varnost v prometu in za uporabo v programih za prevzgojo voznikov, ki so vozili pod vplivom alkohola. Vendar te informacije so lahko uporabne tudi pri drugih načinih uporabe alkoholnih zapor.

General Information

• Status: Published
• Public Enquiry End Date: 31-Jul-2015
• Publication Date: 08-Jan-2017
• ICS: 13.200 - Accident and disaster control
• ICS: 43.040.80 - Crash protection and restraint systems
• Technical Committee: I09 - Imaginarni 09
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Jan-2017
• Due Date: 11-Mar-2017
• Completion Date: 09-Jan-2017
• Ref Project: EN 50436-3:2016 - Alcohol interlocks - Test methods and performance requirements - Part 3: Guidance for authorities, decision makers, purchasers and users

Relations

• Revised: SIST-TP CLC/TR 50436-3:2011 - Alcohol interlocks - Test methods and performance requirements - Part 3: Guidance for decision makers, purchasers and users
• Effective Date: 14-Jan-2015
• Replaces: SIST-TP CLC/TR 50436-3:2011 - Alcohol interlocks - Test methods and performance requirements - Part 3: Guidance for decision makers, purchasers and users
• Effective Date: 27-Dec-2016

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 50436-3:2017
01-februar-2017
1DGRPHãþD
SIST-TP CLC/TR 50436-3:2011
$ONRKROQH]DSRUH3UHVNXVQHPHWRGHLQ]DKWHYDQHODVWQRVWLGHO1DYRGLOR]D
XSUDYQHRUJDQHQRVLOFHRGORþDQMDNXSFHLQXSRUDEQLNH
Alcohol interlocks - Test methods and performance requirements - Part 3: Guidance for
authorities, decision makers, purchasers and users
Alkohol-Interlocks - Prüfverfahren und Anforderungen an das Betriebsverhalten Teil 3:
Leitfaden für Behörden, Entscheider, Käufer und Nutzer
Alcootests électroniques anti-démarrage - Méthodes d'essai et exigences de
performance - Partie 3: Lignes directrices pour décideurs, acheteurs et utilisateurs
Ta slovenski standard je istoveten z: EN 50436-3:2016
ICS:
13.200 3UHSUHþHYDQMHQHVUHþLQ Accident and disaster control
NDWDVWURI
43.040.80 6LVWHPL]D]DãþLWRSULWUNXLQ Crash protection and
VLVWHPL]D]DGUåHYDQMH restraint systems
SRWQLNRY
SIST EN 50436-3:2017 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50436-3:2017

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SIST EN 50436-3:2017


EUROPEAN STANDARD
EN 50436-3

NORME EUROPÉENNE

EUROPÄISCHE NORM
December 2016
ICS 71.040.40; 43.040.10 Supersedes CLC/TR 50436-3:2010
English Version
Alcohol interlocks - Test methods and performance
requirements - Part 3: Guidance for authorities, decision
makers, purchasers and users
thylotests antidémarrage - Méthodes d'essais et Alkohol-Interlocks - Prüfverfahren und Anforderungen an
exigences de performance - Partie 3 : Document das Betriebsverhalten - Teil 3: Leitfaden für Behörden,
d'orientation pour les autorités, les décideurs, les Entscheider, Käufer und Nutzer
acheteurs et les utilisateurs
This European Standard was approved by CENELEC on 2016-10-31. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any
alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50436-3:2016 E

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EN 50436-3:2016 (E)
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Application of alcohol interlocks as a road safety measure . 10
4.1 General . 10
4.2 Primary preventive application . 10
4.3 Secondary preventive application . 11
5 Application of alcohol interlocks for automatic access control . 11
6 Introduction of alcohol interlocks for commercial and professional use . 12
6.1 Alcohol interlocks, a way to ensure quality . 12
6.2 International Standard ISO 39001 . 12
6.3 Systematic procedures to introduce alcohol interlocks . 12
6.4 Dialogue with unions or other representatives . 13
6.5 Dealing with alcohol problems . 14
7 Alcohol interlocks in drink driving offender programmes . 14
7.1 Overview . 14
7.2 Participation rate . 15
8 Criteria for selection . 15
8.1 Approvals and performance testing . 15
8.1.1 EMC legislation . 15
8.1.2 Performance standards . 16
8.2 Breath alcohol measurement techniques . 17
8.2.1 General . 17
8.2.2 Electrochemical sensors . 17
8.2.3 Semiconductor sensors . 18
8.2.4 Optical sensors . 18
8.3 Quality demands and choice of products . 18
8.4 Parameter settings . 20
8.4.1 Alcohol concentration limit . 20
8.4.2 Other parameters . 20
8.5 Circumvention, manipulation and tampering . 21
8.6 Data memory, download and analysis . 22
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9 Installation in vehicles . 22
9.1 General . 22
9.2 Instructions for installation . 22
9.3 Criteria for placement . 23
10 Use . 24
10.1 Education and information for the user. 24
10.2 Instructions for use . 25
10.3 Environmental conditions . 26
10.4 Override function . 26
10.4.1 Override function for emergency situations . 26
10.4.2 Override function for technical service . 26
10.5 Retest function . 26
10.6 Change driver function . 27
10.7 Effects of mouth alcohol and environmental contamination . 27
10.8 Interfering substances . 28
11 Maintenance . 28
11.1 Training . 28
11.2 Periodic inspection, functional tests and calibration . 28
11.3 Instructions for service . 28
12 Removal . 29
13 Conclusion . 29
Annex A (informative) Questions and answers . 30
A.1 What is an alcohol interlock ? . 30
A.2 Where are alcohol interlocks used ? . 30
A.3 Is it difficult to install an alcohol interlock ? . 30
A.4 Is it possible to install an alcohol interlock in motorcycles ? . 30
A.5 Can an alcohol interlock be circumvented ? . 30
A.6 Can a sober person blow into the alcohol interlock to allow an impaired person to
drive ? . 30
A.7 Do alcohol interlocks detect tampering or attempts to bypass them ?. 31
A.8 Can any person use a car with an alcohol interlock ? . 31
A.9 Is it necessary to deliver a breath test after a short stop ? . 31
A.10 What is a retest ? . 31
A.11 Is it dangerous to deliver a retest during driving ? . 31
A.12 Should an alcohol interlock be calibrated regularly ? . 31
A.13 What happens if the alcohol interlock is defective ? Can the motor then be started ? . 31
A.14 What happens if the alcohol interlock becomes defective while the motor is
running ? . 32
A.15 Can a sober person have a positive test result ? . 32
A.16 How long does it take until residual mouth alcohol disappears ? . 32
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A.17 What happens if a person has taken medicines containing alcohol ? . 33
A.18 How effective are alcohol interlocks in preventing (repeat) drink driving ? . 33
A.19 Can alcohol dependent drivers benefit from alcohol interlocks ? . 33
A.20 Are there further beneficial effects apart from road safety ? . 33
Annex B (informative) Items to be considered when selecting an alcohol interlock . 34
Annex C (informative) Description of basic parameter settings. 35
Annex D (informative) Basic steps of a drink-driving-offender programme . 39
Bibliography . 44
Tables
Table C.1 – Summary of typical parameter settings of alcohol interlocks . 35
Table D.1 – Summary of typical steps of drink-driving-offender programme . 39

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SIST EN 50436-3:2017
EN 50436-3:2016 (E)
European foreword
This document (EN 50436-3:2016) has been prepared by CLC/BTTF 116-2 “Alcohol interlocks”.
The following dates are fixed:
• latest date by which this document (dop) [2017-10-31]
has to be implemented
at national level by publication of an identical
national standard or by endorsement
• latest date by which the national standards (dow) [2019-10-31]
conflicting with this document
have to be withdrawn
This document supersedes CLC/TR 50436-3:2010.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
EN 50436-3:2016 includes the following significant technical changes with respect to
CLC/TR 50436-3:2010:
– Clause 3: definitions are added for primary prevention and secondary prevention.
– Clause 4: this clause has been revised including primary prevention and secondary prevention.
– Clause 5: the former content for automatic access control is now in a separate clause.
– Subclause 6.2: the chapter on International Standard ISO 39001 is added.
– Clause 7: the chapter on alcohol interlocks in drink driving offender programmes is added.
– Subclause 8.1: the text is updated with respect to the current legislation.
– Informative Annex C with a description of basic parameter settings is added.
– Informative Annex D with a description of basic steps of a drink driving offender programme is
added.
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EN 50436-3:2016 (E)
Introduction
According to the European Transport Safety Council (ETSC), in about a quarter of the fatal accidents
that occur in traffic on European roads, alcohol impairment has been a contributory factor. Drink-
driving is found in all social classes and professional categories, often without their families, friends,
colleagues or supervisors knowing about it. In those cases where there actually is an awareness, it is
often difficult to know how to act or confront the problem. A strategy has been drawn up within the
European Commission to decrease alcohol related injuries as well as to support countries that are
working in different ways to tackle the problem of drink-driving.
One strategy to decrease alcohol-related accidents is to implement the use of alcohol interlocks. The
main purpose of alcohol interlocks is to prevent persons with breath alcohol concentrations exceeding
a set limit value from driving a vehicle.
The use of alcohol interlocks in the vehicles of drink-driving offenders was started in the USA in 1985
and followed a few years later in Canada. From the end of the 1990s, the use of alcohol interlocks has
spread worldwide, especially in Australia and several European countries. In Sweden, offender
programmes started in 1999, followed closely by the use of alcohol interlocks for quality assurance of
transportation. Further examples for the implementation of alcohol interlocks saving human lives every
year in Europe are Finland, France and the Netherlands. A continuously updated overview is published
by ETSC (www.etsc.eu).
There are several areas in which alcohol interlocks may be used:
– installed in a vehicle as a general preventive measure for the promotion of traffic safety; or
– in vehicles as ordered by a court or an administrative authority as part of a drink-driving offender
programme; or
– for persons subject to a medical or rehabilitation programme; or
– as a safety measure for the access to machinery or certain restricted areas.
This guidance for authorities, governments, political decision makers, transport companies,
purchasers, unions and users contains numerous recommendations for those interested in the use of
alcohol interlocks. However, it is not mandatory and it does not contain any requirements.
This European Standard is part of a series of European Standards which mainly describe test methods
and requirements for alcohol interlocks. It is assumed that the recommendations given in this
document are used for alcohol interlocks fulfilling the requirements of one or more of the performance
standards of this series.
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1 Scope
An alcohol interlock is a system comprising a breath alcohol measuring instrument and an immobiliser
which may be easily installed in motor vehicles as passenger cars, coaches, taxis, hazardous goods
transporters, lorries, trams, trains, motorcycles, boats, or snow mobiles. Before the vehicle motor can
be started or the vehicle can be moved, a breath sample needs to be provided to the alcohol interlock,
normally through a mouthpiece. Once the breath alcohol measurement has been performed, the
alcohol interlock will prevent drivers from starting the motor if they have an alcohol concentration above
a predetermined limit value. This limit may be set at the legal limit of a respective country or lower.
Alcohol interlocks that meet the relevant European Standards detect, for example, if the sample is
delivered by a human being. They are also capable of preventing and detecting tampering with the
instrument.
Additional parts of the system may include identity checking or recording mechanisms.
The purpose of this European Standard is to give practical guidance for selection, installation, use and
maintenance of alcohol interlocks. It is directed to all those who have an interest in alcohol interlocks
as well as companies selling and installing alcohol interlocks, purchasers and users for commercial,
professional or private use. The European Standard gives information about the alcohol interlock and
how it is to be used.
This European Standard describes alcohol interlocks for use in vehicles as a general preventive
measure in traffic safety as well as for use in drink driving offender programmes. However, information
provided may also be useful for alcohol interlocks in other applications.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 50436-1:2014, Alcohol interlocks - Test methods and performance requirements - Part 1:
Instruments for drink-driving-offender programs
EN 50436-2:2014, Alcohol interlocks - Test methods and performance requirements - Part 2:
Instruments having a mouthpiece and measuring breath alcohol for general preventive use
EN 50436-6:2015, Alcohol interlocks - Test methods and performance requirements - Part 6: Data
security
NOTE The technology of alcohol interlocks is rapidly evolving, and further innovations can be expected,
which could be considered in future amendments or new parts of these European Standards.
ISO 39001:2012, Road traffic safety (RTS) management systems - Requirements with guidance for
use
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3 Terms and definitions
For the purposes of this document, the following terms and definitions, given in EN 50436-1:2014,
apply.
3.1
alcohol interlock
device which is normally in the blocking state when installed to prevent the starting of the vehicle
motor, and which can be brought into the not-blocking state only after the presentation and analysis of
a breath sample with an alcohol concentration below a limit value
Note 1 to entry: It normally consists of a handset and a control unit electrically connected to the vehicle.
Note 2 to entry: In this European Standard the expression “starting of the vehicle motor” includes provision of an
output signal from the alcohol interlock to the vehicle to enable the starting, operation or movement of the
vehicle.
3.2
Breath Alcohol Concentration
BrAC
mass concentration of ethanol, expressed in mg/l (milligram ethanol per litre breath air), in a breath
sample delivered into an alcohol interlock
3.3
breath sample
breath air sample taken under forced expiration
3.4
accepted breath sample
breath sample fulfilling set requirements for volume, flow, exhalation time and other human breath
sample characteristics
NOTE 1 to entry: The acceptance of a breath sample is independent from the alcohol concentration.
3.5
breath test
providing a breath sample to an alcohol interlock
3.6
mouthpiece
part through which the breath sample is delivered into the alcohol interlock
3.7
blocking state
state in which the alcohol interlock inhibits the starting of the vehicle motor
3.8
not-blocking state
state in which the vehicle motor can be started
3.9
breath alcohol concentration limit
set value of the breath alcohol concentration at or above which the vehicle motor will be prevented
from being started
3.10
initial test
breath test provided before the vehicle motor is started
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3.11
retest
breath test provided after the vehicle motor has started
NOTE 1 to entry: The retest function is a measure to assist in the detection of circumvention.
3.12
start period
time interval after an accepted breath sample with an alcohol concentration below the breath alcohol
concentration limit has been delivered, during which the vehicle motor may be started
3.13
restart period
time interval after the ignition is switched off during which the vehicle motor may be started again
without the delivery of another breath sample
NOTE 1 to entry: This restart period is intended to ensure the drivers ability to restart the vehicle motor after a
stall situation.
3.14
override
method of allowing the start of the vehicle motor without providing a breath sample
NOTE 1 to entry: The override function is for use in exceptional circumstances only, for example in case of a
device malfunction.
3.15
bypass
starting the vehicle motor without providing a breath sample or without engaging the override function
3.16
tampering
unauthorised change to or interference with the alcohol interlock or its installation in the vehicle or its
functioning
3.17
violation
act of doing something that is not allowed by the rules of a drink-driving-offender programme
3.18
data memory
record of breath test results and other events with date and time stored in the internal memory of the
alcohol interlock
3.19
supply voltage
voltage obtained from the electric power source of the vehicle for operation of the alcohol interlock
3.20
calibration interval
time period between calibrations during which the alcohol interlock fulfils the stability requirements for
the measurement of the breath alcohol concentration
3.21
manufacturer
person or organisation responsible for the design, construction and/or production of the alcohol
interlock
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3.22
warm-up time
duration from power-up of the alcohol interlock until it is ready to accept a breath sample and to fulfil
the functional test requirements
3.23
primary prevention
prevention of a driver with no current alcohol related driving licence restriction from starting the vehicle
motor while under the influence of alcohol
3.24
secondary prevention
prevention of a driver with a current alcohol related driving licence restriction from starting the vehicle
motor while under the influence of alcohol
4 Application of alcohol interlocks as a road safety measure
4.1 General
To date, alcohol interlocks have been applied predominantly in the framework of road safety policies, in
the beginning exclusively aimed at the secondary prevention of drink-driving among arrested offenders.
In recent years, however, especially in Europe, the primary prevention among commercial,
professional and even private drivers has become more and more important.
4.2 Primary preventive application
Commercial and professional use
Installing an alcohol interlock as a general preventive measure in vehicles for the safe transport of
persons or goods such as hazardous goods transporters, lorries, coaches, taxis, trams, trains,
motorcycles, boats, snow mobiles or other modes of transportation can reduce accidents and related
downtime. An installation can also improve the image of the transport company by increasing road
safety, and improve their customers perception of their own safety. Alcohol interlocks may be used as
a transport quality instrument for vehicles operated by companies or authorities. They may also be a
requirement of employment within an alcohol policy of a company or authority, where they may be used
for compliance monitoring.
Several countries have required legally to install alcohol interlocks in certain vehicles (e.g. buses) as a
primary preventive application.
Private use by the general driving population
The control of drink-driving behaviour through alcohol interlocks may also be proposed for private use
on a personal voluntary decision basis. In private vehicles, boats, snow mobiles or recreational
vehicles the voluntary installation of an alcohol interlock as a preventive measure can help to ensure
that vehicle drivers are sober. Furthermore, they can offer reassurance to partners or for example to
parents whose children may also drive a vehicle. Interlocks may also be applicable with regard to self-
control for families who wish to avoid drink driving under any circumstances, or to insurance
companies which may allow a reduced insurance premium for drivers, especially young drivers or
drivers with a personal history of alcohol problems.
The self-evaluation of alcohol levels is considered as a major factor in the prevention of alcohol related
accidents. If alcohol interlocks are installed in private vehicles, then this will provide an additional
means for self-evaluation.
Private use as part of addiction treatment
In European countries, the number of problem drinkers who voluntarily enter addiction care and have a
valid driver's license, is much larger than the number of drink-driving offenders who are eligible to enter
a mandatory alcohol interlock programme. These persons are probably higher motivated to use an
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SIST EN 50436-3:2017
EN 50436-3:2016 (E)
alcohol interlock than arrested offenders. Furthermore, the alcohol interlock may be helpful in the
process of rehabilitation, both as a diagnostic instrument and as a remedial tool. The type of
programme for this category of high-risk drivers shall be more or less similar to an offender
programme. This means that the costs will be relatively high compared to the cost of a primary
prevention programme which does not need close monitoring. But the cost-benefit rate may be even
better than the one associated with offender programmes.
4.3 Secondary preventive application
The secondary preventive application of alcohol interlocks always has a more or less mandatory
character. Participation in an alcohol interlock programme is ordered by the court or by an
administrative body. Targe
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