Transport Trailer Technician - Exam Information

Table of Contents


This tool can be used to reflect on your own experience and knowledge in the trade compared with what is on the exam.

Exam Breakdown

Each Red Seal exam's questions are developed to assess the activities laid out in the National Occupational Analysis. This trade's Red Seal exam has 100 questions Footnote *, which are distributed as follows:

A – Performs common occupational skills - 6 questions
Task A-1 Performs safety-related functions
2 questions
Task A-2 Uses and maintains tools and equipment
2 questions
Task A-3 Performs routine work practices
1 question
Task A-4 Organizes work
1 question
Task A-5 Uses communication and mentoring techniques
0 questions
B – Diagnoses and services suspension systems - 14 questions
Task B-6 Diagnoses suspension systems
7 questions
Task B-7 Services suspension systems
7 questions
C – Diagnoses and services brake systems - 18 questions
Task C-8 Diagnoses brake systems
9 questions
Task C-9 Services brake systems
9 questions
D – Diagnoses and services axles and wheel end assemblies - 15 questions
Task D-10 Diagnoses axles and wheel end assemblies
8 questions
Task D-11 Services axles and wheel end assemblies
7 questions
E – Diagnoses and services trailer chassis, bodies and coupling devices - 17 questions
Task E-12 Diagnoses trailer chassis and trailer bodies
5 questions
Task E-13 Services trailer chassis and trailer bodies
5 questions
Task E-14 Diagnoses coupling devices and landing gear
4 questions
Task E-15 Services coupling devices and landing gear
3 questions
F – Diagnoses and services electric and electronic systems - 14 questions
Task F-16 Diagnoses electric and electronic systems
8 questions
Task F-17 Services electric and electronic systems
6 questions
G – Diagnoses and services hydraulic systems - 6 questions
Task G-18 Diagnoses hydraulic systems
3 questions
Task G-19 Services hydraulic systems
3 questions
H – Diagnoses and services temperature control systems - 10 questions
Task H-20 Diagnoses temperature control systems
4 questions
Task H-21 Services temperature control systems
6 questions

Types of Exam Questions

All Red Seal exam questions are written in multiple-choice format. A multiple-choice question consists of question followed by four possible responses (A, B, C, D). Every question has exactly one correct answer and three incorrect options. They are not misleading or trick questions, but the incorrect options are not always obvious.

There are three types of questions that you will see on Red Seal Exams:

  • Knowledge and Recall
  • Procedural and Application
  • Critical Thinking

Knowledge and Recall

This type of question tests your ability to recall and understand definitions, facts and principles.

For this trade, between 10 and 20% of questions that are this type.

Example of a Knowledge and Recall Question:

Which tool is used to check run out on a brake rotor?

  1. Feeler gauge.
  2. Dial indicator.
  3. Vernier caliper.
  4. Outside micrometer.

Answer: B

Procedural and Application

This type of question tests your ability to apply your knowledge of procedures to a situation.

For this trade, between 40 and 50% of questions are this type.

Example of a Procedural and Application Question:

What is done before installing a one-piece wheel seal?

  1. Apply lubricant to seal bore.
  2. Clean and lubricate seal bore.
  3. Clean seal bore.
  4. Apply gasket compound to seal bore.

Answer: C

Critical Thinking

This type of question tests  your ability to interpret data, solve problems and arrive at valid conclusions.

For this trade, between 35 and 45% of questions are this type.

Example of a Critical Thinking Question:

A trailer with disc brakes has excessive vibration when braking. What is the cause?

  1. Seized caliper.
  2. Excessive rotor run-out.
  3. Excessive inner pad wear.
  4. Excessive outer pad wear.

Answer: B

Try more sample questions for this trade and check out the Exam Preparation Guide. It will give you practical insights on what goes into Red Seal exams, and how you can best prepare yourself to do well.

For more information about exam preparation materials contact your provincial/territorial apprenticeship office.