Saliva testFlanders
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254. Saliva test
A saliva test is a roadside screening test used to detect recent use of certain drugs that can affect driving ability. A sample of saliva is collected from the mouth and tested with a portable device for specified substances. The test is generally used as an initial screening rather than as the final evidential analysis. If the result is positive, a more precise saliva analysis or, in some circumstances, a blood test may follow.
Wikimedia.org • Zapacit • CC BY-SA
What is a saliva test in Belgium?
A Belgian saliva test is a roadside screening test used to detect recent use of specified drugs that can impair driving ability.
When can the police perform a saliva test in Belgium?
Police normally assess signs of recent drug use using a standardised checklist and take a saliva test when it indicates such use. For a person suspected of causing or contributing to a road accident, the law also allows an immediate saliva test without first completing that checklist.
🔗 codex.vlaanderen.be • Vlaamse Codex, Road Traffic Act, Article 61bis
How long are you prohibited from driving after a positive saliva test in Belgium?
A positive saliva test results in an immediate 12-hour driving prohibition. Before driving again, a new saliva test is required. If that test is still positive, the prohibition is renewed for another 12 hours.

Traffic rules
Flanders