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A free, self-paced tutorial with diagrams – no account needed.
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25 questions on UN R155: scope and purpose, core vocabulary, the CSMS and vehicle type requirements, Annex 5, how approval authorities and technical services assess compliance, lifecycle duties after approval, and practical scenarios. Pass mark 70 %.
25 questions · 45 minutes · 2 attempts · pass mark 70%. Free: sign in to start. Your score, the correct answers and an explanation for every question appear as soon as you submit; 70% or more unlocks your certificate.
Learn, practise, get certified
Section outline
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1. Work through the tutorial (about 60 minutes, open to everyone). 2. Sign in free and take the 25-question knowledge check (2 attempts). 3. Score 70% or more to unlock your certificate.