BS EN 50436-4:2019

What is BS EN 50436-4 about? 

BS EN 50436-4 is part 4 of multi series standard on connection and digital interface between the alcohol interlock and the vehicle. 

BS EN 50436-4 specifies the interface between an alcohol interlock for production and aftermarket installation and a vehicle. It details the modes of electrical connections, the assignment of electrical connection lines as well as the information to be exchanged between the vehicle and the alcohol interlock. 

Note 1: BS EN 50436-4 is applicable to alcohol interlocks for drink-driving-offender programmes as well as to alcohol interlocks for general preventive use. 

Note 2: BS EN 50436-4 is directed at manufacturers of alcohol interlocks and at vehicle manufacturers. 

Note 3: BS EN 50436-4 the information exchange using a LIN connection. 

Who is BS EN 50436-4 for?  

BS EN 50436-4 on alcohol interlock applies to: 

• Manufacturers of alcohol interlocks device 
• Vehicle manufacturers 
• Retailers of alcohol interlock devices 
• Suppliers of alcohol interlocks device 

Why should you use BS EN 50436-4?  

BS EN 50436-4 purpose of alcohol interlocks is to enhance traffic safety by preventing persons with alcohol concentrations exceeding a set limit value from driving a motor vehicle and specifies test methods and essential performance requirements for alcohol interlocks and gives guidance for decision-makers, purchasers, and users. 

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, on a voluntary basis or required legally in certain vehicles (e.g., vehicles for children transport) 
• In vehicles as ordered by a court or an administrative authority as part of a drink-driving offender programme 
• For people subject to a medical or rehabilitation programme 

Alcohol interlocks are often intended for after-market installation. For this purpose, they must be connected to the electrical circuits of the vehicle.  Installation of an alcohol interlock shall not interfere with the proper performance of the vehicle, shall not impair the safety and security of the vehicle, and shall be as easy and as fast as possible. Additionally, the installation costs should be low in relation to the total cost of the alcohol interlock. 

BS EN 50436-4 provides test methods and performance requirements to have a desirable to have a standardized interface between alcohol interlocks and vehicles.