Cannabis while driving: blood test in Zweibrücken

In Zweibrücken, a routine traffic check on Saturday evening uncovered suspicion of driving under the influence of cannabis. As part of the standard inspection on Schlachthofstraße, officers from the Zweibrücken police inspection stopped a female car driver. During the check, the woman caught the attention of the officers due to several drug-related indicators. The police then ordered a blood sample and initiated administrative offence proceedings. Further investigations continue until the laboratory result is available.

Traffic check on Schlachthofstraße

Schlachthofstraße is located in the urban area of Zweibrücken, a district town in the West Palatinate region of Rhineland-Palatinate. The street is part of the city road network and is regularly monitored by police patrols. That Saturday evening, a patrol from the Zweibrücken police inspection was on regular traffic monitoring duty when officers checked the driver of a passenger car. Such checks serve to verify road safety and compliance with applicable traffic regulations. Polizei and traffic authorities use these measures specifically to detect and penalise driving under the influence of intoxicating substances at an early stage. During the check, the officers focused on possible impairments indicating narcotics consumption.

Drug-related indicators during the check

During the inspection, the police officers identified several abnormalities that are considered typical indicators of drug use in police work. Specifically, the driver stood out due to red and watery eyes as well as an unusual pupil reaction. These physical signs can, in the assessment of the police, indicate consumption of cannabis or other intoxicating substances, even though they alone do not constitute definitive proof.

When there is justified suspicion, officers typically order a blood sample to objectively clarify the facts.

Blood sample ordered and taken

Based on the abnormalities detected, the officers ordered a blood sample and collected it afterwards on site or as part of the prescribed procedure. Blood sampling is considered a key piece of evidence under German road traffic law when there is suspicion that a person drove a motor vehicle while under the influence of alcohol or drugs. The sample is usually taken under medical supervision and subsequently analysed in a forensic laboratory.

The result of the blood test can be decisive for the further course of the proceedings. Only when the laboratory values are available can a final assessment be made as to whether the driver was actually under the influence of cannabis or other substances at the time of the check. Until then, the investigation remains open.

Background: previous incident in February 2026

While processing the case, the police established that the driver had already come to attention in February 2026 in connection with cannabis. At that time, a violation of Section 24a of the Road Traffic Act (StVG) had been recorded. Section 24a StVG regulates the handling of cannabis and other narcotics in road traffic in Germany and provides for administrative offences and fines under certain conditions.

Repeated offences can affect legal assessment and possible sanctions.

Administrative offence proceedings initiated

Administrative offence proceedings were initiated against the driver on suspicion of driving a motor vehicle while under the influence of intoxicating substances. Administrative offence proceedings differ from criminal proceedings in scope and possible consequences, but can still have significant effects – such as fines, points in Flensburg, or measures related to the driving licence. Driving under the influence of cannabis poses a considerable danger to all road users, as reaction ability and concentration can be impaired.

Legal classification and investigation status

Driving under the influence of narcotics is relevant in Germany from both road traffic and narcotics law perspectives. Since the partial legalisation of cannabis, strict rules continue to apply in road traffic: consumption before or during driving can lead to fines, driving bans, and in cases of repetition to more serious consequences. Threshold values and testing procedures are based on medical and scientific standards.

Further investigations by the Zweibrücken police inspection continue until the blood test result is available. Only then can a decision be made on what legal steps will follow and whether additional measures are required. The press release did not provide specific details on the type or quantity of any substances seized.

Operation at a glance

• Location: Schlachthofstraße in Zweibrücken, West Palatinate
• Time: Saturday evening
• Trigger: traffic check of a female car driver
• Findings: red and watery eyes, unusual pupil reaction
• Measure: blood sample ordered and taken
• Prior history: violation of Section 24a StVG in February 2026
• Proceedings: administrative offence case on suspicion of drug-impaired driving
• Investigation status: pending laboratory result

The Zweibrücken police inspection belongs to the West Palatinate police headquarters and is responsible for police enforcement in the region. Press enquiries about the incident can be directed to West Palatinate police headquarters at telephone number 0631 369-15399 or by email at pizweibruecken@polizei.rlp.de. The report was published through the authority's press channel and summarises the police operation on Schlachthofstraße.

Police and traffic authorities warn against driving a vehicle after consuming cannabis, as even small amounts can impair fitness to drive.