200+ Free STS Practice Questions
Pass your Safety Trained Supervisor exam on the first try — instant access, no signup required.
Choose Your Practice Session
Select how many questions you want to practice
Questions by Category
Key Facts: STS Exam
70%
Passing Score
70/100 questions
100
Questions
Multiple choice
2 hours
Exam Duration
Computer-based
$185
Exam Fee
BCSP
6
Domains
STS5 2026 Blueprint
The STS (Safety Trained Supervisor) exam requires a 70% score to pass (70/100 questions). The 2-hour exam covers 6 domains: Safety Program Implementation & Management, Hazard Awareness, Hazard Controls, Basic Industrial Hygiene, Emergency Preparedness & Management, and Life Critical Activities. The exam fee is $185.
About the STS Exam
Professional certification for supervisors overseeing workers in safety-sensitive industries. The STS exam covers 6 domains based on the STS5 2026 blueprint.
Questions
100 scored questions
Time Limit
2 hours
Passing Score
70%
Exam Fee
$185 (BCSP)
STS Exam Content Outline
Safety Program Implementation & Management
New employee orientation, JSA elements, incident investigation, fitness for duty
Hazard Awareness
Safety inspections, Stop Work Authority, hazard documentation, safety audits
Hazard Controls
Hierarchy of controls, energy isolation, LOTO, hazardous materials handling
Basic Industrial Hygiene
Chronic/acute health hazards, hearing conservation, environmental conditions
Emergency Preparedness & Management
Emergency equipment, shutoff procedures, emergency response plans
Life Critical Activities
Confined space entry, hot work permits, elevated work, excavation safety
How to Pass the STS Exam
What You Need to Know
- Passing score: 70%
- Exam length: 100 questions
- Time limit: 2 hours
- Exam fee: $185
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
STS Study Tips from Top Performers
Frequently Asked Questions
What is the STS exam?
The Safety Trained Supervisor (STS) exam is a professional certification from the Board of Certified Safety Professionals (BCSP) designed for supervisors who oversee workers in safety-sensitive industries. It validates that supervisors have the knowledge to identify hazards, implement controls, and maintain safe work environments.
What is the passing score for the STS exam?
You need a score of 70% (70 correct answers out of 100 questions) to pass the STS exam. The exam consists of 100 multiple-choice questions and you have 2 hours to complete it.
How much does the STS exam cost?
The STS exam fee is $185. This does not include any study materials or preparation courses you may choose to purchase.
What are the STS exam domains?
The STS5 2026 blueprint covers 6 domains: (1) Safety Program Implementation & Management (15%), (2) Hazard Awareness (20%), (3) Hazard Controls (20%), (4) Basic Industrial Hygiene (12%), (5) Emergency Preparedness & Management (11%), and (6) Life Critical Activities (22%).
How should I prepare for the STS exam?
To prepare for the STS exam: 1) Study all 6 domains, focusing on Hazard Awareness, Hazard Controls, and Life Critical Activities (62% combined). 2) Complete at least 200 practice questions. 3) Review BCSP study materials and ANSI/ASSP standards. 4) Aim for 80%+ on practice exams before scheduling.
Who should take the STS exam?
The STS certification is designed for supervisors in construction, manufacturing, oil and gas, and other safety-sensitive industries who oversee workers but are not primarily safety professionals. It is ideal for foremen, lead workers, and operations supervisors with safety responsibilities.