Question juridique clé
Whether serious doubts about the appellant's fitness to drive justified a precautionary license withdrawal and medical examination.
Solution extraite
Yes. The prior history, positive drug test, possession of large quantities of cannabis and other drugs, and inconsistent statements created justified doubts.
Motifs extraits
A precautionary withdrawal under road traffic law requires only weighty indications of unfitness, not proof of definite incapacity. Regular cannabis use, prior drug-related traffic issues, and recent renewed consumption after lifting abstinence conditions supported further assessment.