Germany to Enhance Tracking of Traffic Accidents Involving Cannabis

German authorities are introducing measures to more accurately record serious traffic accidents involving drivers under the influence of cannabis. This initiative aims to provide clearer data on the potential effects of cannabis consumption on road safety following the partial legalization of cannabis use for adults, which has been in effect since 2024. The Federal Ministry of Transport has drafted a legislative amendment that will be submitted to the Bundesrat. The amendment proposes that, in addition to existing information on alcohol-related incidents, official traffic accident statistics should also include details on the degree of cannabis intoxication in cases where cannabis is suspected to have played a role.

Currently, German law enforces a threshold value for tetrahydrocannabinol (THC)--the main psychoactive compound in cannabis--similar to the 0.5 per mille blood alcohol limit. Since August 2024, drivers found with 3.5 nanograms of THC per milliliter of blood serum or more face penalties including a EUR500 fine, a one-month driving ban, and two penalty points recorded in the central register in Flensburg. If both cannabis and alcohol are detected in the driver's system, the sanctions increase, with fines reaching EUR1,000 along with the same driving ban and penalty points.

The new legislative proposal stipulates that police officers will record THC levels at the scene of serious accidents. The data will be compiled in the national traffic accident database, which already logs information such as the age and gender of those involved, the type of vehicles, and the duration drivers have held their licenses. The focus will be on accidents resulting in injury or death, as well as those causing significant property damage. The expanded data collection is expected to enhance research into accident causes and patterns, particularly regarding cannabis influence.

Additional regulations apply to novice drivers and those under the age of 21, who are subject to a zero-tolerance policy for cannabis consumption, mirroring existing rules for alcohol. For these groups, any detectable THC presence constitutes a violation, punishable by a standard fine of EUR250. These stricter rules for young or inexperienced drivers are designed to address heightened risks associated with impaired driving during the early stages of driving experience.

The move to systematically gather and analyze data on cannabis-related traffic accidents is intended to support more effective preventive and educational strategies. The Ministry of Transport has stated that detailed statistics will enable a deeper understanding of factors such as the prevalence of cannabis involvement among accident perpetrators and the behavior of younger drivers. This knowledge will help authorities and researchers identify trends, inform public policy, and develop targeted awareness campaigns to improve road safety.

Germany's partial legalization of cannabis, enacted by the previous coalition government, permits adults to consume and grow limited quantities of cannabis for personal use, subject to various restrictions. The changes to the traffic law are designed to keep pace with evolving social norms and ensure that public safety considerations remain a priority as cannabis becomes more accessible.

The legislative changes follow a period of public debate in Germany over the implications of legal cannabis use, particularly regarding driving safety. By aligning the collection of data on cannabis impairment with existing protocols for alcohol, the government aims to close information gaps and make data-driven decisions on future traffic safety measures. As the new system is implemented, policymakers and researchers will have access to more comprehensive information to guide the ongoing evaluation of cannabis legalization's impact on the nation's roads.