The TSTS exam at a glance
Our mock test is built to match the official CITB TSTS assessment.
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What is the TSTS mock test?
Getting ready for the CITB Tunnelling Safety Training Scheme? This free TSTS mock test lets you rehearse in realistic conditions before the real thing. You answer 25 questions, aim for the 80% pass mark (roughly 20 correct out of 25) and work against a 30-minute limit, exactly as you will on the day. It is designed for operatives, supervisors and managers who work in tunnelling and underground construction and want to walk in feeling prepared.
Every question mirrors the style and subject matter of the official syllabus, covering ground conditions, ventilation and gas monitoring, confined spaces, fire and self-rescue, underground transport and health hazards. When you finish, your score and answers are emailed to you instantly so you can spot weak areas and revise them. There is no sign-up and no charge, so you can keep practising until each underground safety topic feels second nature.
What the TSTS mock test covers
Tunnelling and underground hazards
Recognising the risks specific to working below ground, from restricted access and inrush of water to the dangers of driving and supporting a tunnel excavation.
Ground conditions and instability
Understanding how varying strata, groundwater and support systems affect stability, and how to respond when ground behaves differently than expected underground.
Ventilation and gas monitoring
Maintaining a breathable atmosphere, testing for flammable and toxic gases, and reacting correctly when monitoring equipment signals a change in air quality.
Confined spaces underground
Applying safe entry procedures, atmospheric checks and emergency arrangements when working in shafts, chambers and other restricted underground locations.
Fire, emergency and self-rescue
Following emergency and evacuation procedures, using self-rescue equipment and knowing your role if fire or another incident occurs below ground.
Underground transport and health
Working safely around locomotives, conveyors and plant while controlling health hazards such as dust, silica and noise, backed by permits and safe systems of work.
Why practise with our TSTS mock test?
Know the format
Practise with the same 25-question structure, 80% pass mark and 30-minute limit so nothing about the real assessment feels unfamiliar.
Find your weak spots
Instant results by email show which underground safety topics need more revision before you sit the official TSTS course assessment.
Build exam confidence
Repeated timed practice steadies your nerves, so you read each question calmly rather than rushing under pressure on the day.
Learn for the job
The topics you rehearse are the same hazards you manage in real tunnelling work, making the knowledge useful long after the test.
How to pass your TSTS exam first time
- Treat it like the real thing: set aside the full 30 minutes, silence distractions and work through all 25 questions in one uninterrupted sitting.
- Pace yourself at roughly a minute per question, leaving a few minutes at the end to revisit anything you flagged or felt unsure about.
- Read each question and every option in full before choosing, since underground safety answers often hinge on a single condition or exception.
- After each attempt, review your emailed results and revise the specific topics you got wrong rather than simply resitting the whole test blindly.
- Retake the mock several times across the different tests until you comfortably clear the 80% pass mark on unfamiliar questions.
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TSTS mock test FAQs
Yes, it is completely free. There is no registration, no card details and no trial period. We cover the platform's costs through selected training partners, so you can practise as often as you need at no charge.
Each TSTS mock test contains 25 questions, matching the number used in the official Tunnelling Safety Training Scheme assessment so your practice feels true to the real experience.
You need 80% to pass, which works out at about 20 correct answers out of 25. Aim to clear that mark consistently before you sit the official course assessment.
You have 30 minutes to complete all 25 questions. That is the same time limit as the real assessment, so practising against the clock helps you manage your pace.
No. These questions are written to match the official TSTS syllabus and question style, but they are not the live CITB questions, which cannot be published. They are for practice and revision only.
No. This mock only helps you prepare. To gain the qualification you must attend the official CITB TSTS course and pass its assessment. The mock does not award any certificate or accreditation.
Sit it under timed conditions, review your emailed results, then focus your revision on the topics you missed. Repeat until you clear the 80% pass mark comfortably on questions you have not seen before.
Yes, as often as you like. There are 5 separate tests with no overlapping questions, and the answer options are shuffled each time, so every attempt challenges your knowledge rather than your memory.
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