SSSTS mock test and practice questions
Practise for the Site Supervision Safety Training Scheme exam with timed tests that follow the current CITB paper layout. Written for site supervisors who want to know where they stand before exam day.
Start the free SSSTS mock test
What the real SSSTS exam looks like
- Paper
- 25 questions
- Time
- 30 minutes
- Pass rule
- 80%, first 4 all right
- 22 multiple choice questions and 3 short written questions
- Four safety-critical questions at the start of the paper. You must get all four right to pass, whatever your total score
- Pass mark: 80% overall, and you must also pass the trainer review on the course
Source: CITB Appendix C: SSSTS (v01.04, February 2026). Read the full SSSTS exam guide.
Ways to practise
Mock exam
25 questions, 30 min
The whole paper against the real clock, marked to the real pass rules.
Free: one fixed paper, as often as you like.
Quick fire
10 questions
One tap per answer and straight on. You see what you got right at the end of the round.
Free: one round per exam.
Speed round
60 seconds
As many as you can answer in a minute. A wrong answer costs no time but resets your run.
Free: one round per exam.
Daily challenge
5 questions
Five questions picked for the day, with a new five tomorrow.
Free: every day, from the free paper.
Full access adds unlimited rounds from the whole bank and a topic drill on your weakest modules. Your streaks, best scores, topic bars and badges are kept in your own browser. No account, and they are not sent to us.
Practise by module
Free test or full access
| What you get | Free | £6.99 |
|---|---|---|
| One complete timed paper for each exam | Yes | Yes |
| Pass or fail, marked to the real rules, with your score by module | Yes | Yes |
| Explanations | First 3 mistakes | Every question |
| Full question bank (344 SMSTS, 256 SSSTS) | No | Yes |
| Unlimited new timed papers | No | Yes |
| Quick-fire rounds: 10 questions, answers at the end | One per exam | Unlimited |
| Speed rounds: as many as you can in 60 seconds | One per exam | Unlimited |
| Daily challenge: 5 questions a day | From the free paper | From the full bank |
| Topic drill on your weakest modules | No | Yes |
| Progress on this device: streaks, best scores, topic bars, badges | Yes | Yes |
| Account or sign-up needed | None | None |
| Cost | £0 | £6.99 once |
| How long it lasts | No limit | 30 days, no renewal |
Not right for you? Email us within 14 days for a full refund, no reason needed. Refund policy
SSSTS questions answered
How many questions are in the SSSTS exam?
CITB's current scheme document lists 25 questions in 30 minutes, worth 30 marks, with 24 needed to pass. The first 4 questions are safety critical and must all be right. Our timed papers follow the same layout.
Is the SSSTS mock test free?
Yes. You get one full timed SSSTS paper free, with a score by topic and no sign-up. The free paper explains your first three mistakes, and you get one quick-fire round, one speed round and the daily challenge from the free paper's questions. Full access (30 days full access, £6.99) adds the whole question bank, new random papers, every explanation, unlimited rounds and a weak-topic drill.
Are these the real SSSTS exam questions?
No. Every question is original, written from HSE guidance and Great Britain legislation. We follow the real format, timing and pass rules, so you know how the paper feels without us copying CITB's papers.
How much does full SSSTS access cost?
One payment of 30 days full access through Stripe for 30 days of full access to both SMSTS and SSSTS. No subscription, and a full refund within 14 days if you are not happy.
How do I get a better SSSTS score?
Take the free paper, read your score by topic, then drill the weakest modules. Full access marks and explains every answer so you can see why one option is right and the others are not.