Case study: Recommendation on alcolocks standards

Since 1 December 2011, convicted drunk drivers may be subject to an alcolock. Correct data storage and fraud prevention are crucial for effective monitoring and verification. NMi has already acquired considerable experience in its other markets and has contributed its specialist expertise to help prepare the NEN-EN 50436-6 standard for alcolocks.


Data is stored in alcolocks to enable later verification. This European EN standard specifies security requirements for protecting and processing data stored in the alcolock’s memory. Reliable and proper storage of this data is important to be able to guarantee the accuracy of the information to both the police and the driver. The type examination involves testing whether the measurements are correctly stored and whether they are fraud resistant.

According to the Institute for Road Safety Research (SWOV), 20% of road deaths in the Netherlands are alcohol-related. The Ministry of Infrastructure and the Environment expects the alcolock programme (ASP) to save five or six traffic fatalities a year. If the ASP is properly implemented, SWOV believes that as many as 35 traffic casualties could be prevented.