1.1 Current Exam Facts
Key Takeaways
- The current Red Seal Truck and Transport Mechanic exam is 135 multiple-choice questions per the red-seal.ca exam-information page - treat this as the governing count over the older 150-question figure still shown on some weightings pages
- You need 70% to pass, the exam runs about 4 hours, and it is delivered through your province or territory's apprenticeship authority, not by a single national test centre
- The trade is nationally called Truck and Transport Mechanic under the Red Seal Program; Ontario's compulsory version of the same trade is named Truck and Coach Technician, trade code 310T - both sit under NOC 72410
- Passing earns the Red Seal endorsement, which gives interprovincial labour mobility - certified technicians can work in any of the provinces and territories that recognize the trade without re-certifying
- Provincial exam fees typically run about $100-170 CAD and vary by jurisdiction; there is no single fixed national fee, so confirm your exact cost with your own apprenticeship authority before budgeting
The Exam You Are Actually Writing
The Red Seal Truck and Transport Mechanic interprovincial (IP) exam is the national certifying exam for technicians who service, diagnose, and repair heavy commercial trucks, trailers, and buses. According to the official red-seal.ca exam-information page for the trade, the current exam is built from 135 multiple-choice questions. An older weightings document for the trade still shows a 150-question figure from a prior exam version - when the two disagree, the exam-information page's 135-question count is the one to plan around, because it reflects the current live exam blueprint.
Every question on the exam is multiple-choice with a single best answer. There is no written, practical, or oral component in the IP exam itself - your hands-on competency is assessed separately through your apprenticeship hours and, in many jurisdictions, a practical evaluation completed before you are even eligible to write the IP exam. The 135 questions are your one shot at the interprovincial credential, so pacing and content coverage both matter.
You need 70% correct to pass. That is a straightforward raw-percentage cut score - unlike some professional exams that use scaled or criterion-referenced scoring, the Red Seal trade exams publish a flat passing percentage. On 135 questions, 70% means you can miss roughly 40 questions and still pass, which is a meaningful cushion if you spread your study across every block rather than mastering only your strongest systems.
Timing And Test-Day Logistics
Plan for about 4 hours to complete the exam. That is a generous window for 135 questions - a little under two minutes per question on average - so time pressure is rarely the reason candidates fail this exam. Content gaps are. Use the extra time to slow down on calculation-based items (pushrod stroke limits, axle ratio math, Ohm's law problems) rather than rushing through the whole paper.
A detail that surprises first-time writers: the exam supplies reference material at the sitting. Common formulas (Ohm's law, gear/axle ratio calculations, mechanical advantage) and standard trade acronyms are typically provided rather than left to pure memorization. This does not mean you can skip formulas in your study plan - you still need to recognize which formula applies to a scenario and how to rearrange it - but it does mean your study time is better spent on application than on rote memorization of formula sheets.
The exam is delivered by your province or territory's apprenticeship authority, not by a single national testing body. This has three practical consequences:
| Logistics item | What varies by province/territory |
|---|---|
| Test date and location | Set by the local authority, often at a designated test centre or training college |
| Exam fee | Typically ~$100-170 CAD, but confirm the exact figure locally - it is not a fixed national price |
| Retake policy and waiting period | Set locally; expect an additional fee and a mandatory wait before rewriting |
Do not assume a fee or scheduling rule you read on a forum applies in your jurisdiction. Confirm directly with your provincial or territorial apprenticeship authority before you commit to a test date.
One Trade, Two Names: Truck and Transport Mechanic vs. Truck and Coach Technician
A source of real confusion for candidates is that this trade has two names in active use. Nationally, under the Red Seal Program, the trade is called Truck and Transport Mechanic. In Ontario, the same trade is legislated under the Building Opportunities in the Skilled Trades Act, 2021 as Truck and Coach Technician, carrying the trade code 310T. Ontario's own regulator (Skilled Trades Ontario) is explicit that this is the same Red Seal trade, just administered locally under a different title - the Certificate of Qualification you earn in Ontario is recognized nationally through the Red Seal endorsement once you pass the IP exam.
Other provinces use their own labels too (for example, some use "Truck and Transport Technician" informally in job postings), but the official Red Seal trade name that governs the national exam blueprint is Truck and Transport Mechanic. When you search for study material, search both names - a resource titled for "Truck and Coach Technician 310T" and one titled "Truck and Transport Mechanic" can both be exactly on point for your exam.
Underlying both names is a single occupational classification: NOC 72410 - Automotive service technicians, truck and bus mechanics and mechanical repairers. This is the federal government's official occupation code, used for immigration programs (including the Federal Skilled Trades Program), labour market data, and apprenticeship registration paperwork. If a form asks for your NOC code, 72410 is the correct entry regardless of which provincial trade name is printed on your Certificate of Qualification.
Who The Trade Covers - And Why The Red Seal Matters
The scope of practice is broader than "trucks." A Truck and Transport Mechanic (or Truck and Coach Technician) inspects, diagnoses, and repairs the structural, mechanical, electrical, and electronic systems of:
- Commercial transport trucks - straight trucks, highway tractors, and vocational trucks
- Trailers - dry van, reefer, flatbed, and specialty trailers, including their independent brake and electrical systems
- Buses and coaches - transit, intercity, and school bus platforms
- Emergency vehicles built on commercial chassis
- Hybrid and electric (EV) commercial platforms - a growing share of the trade as fleets electrify, and now its own dedicated exam block (Block K, covered in the next section)
This breadth is exactly why the Red Seal endorsement exists and why it is worth protecting on exam day. Passing the interprovincial exam adds the Red Seal stamp to your provincial certificate, which is formally recognized by every province and territory that certifies this trade - you do not need to rewrite a provincial exam or requalify if you relocate for work. For a trade tied to long-haul freight, fleet maintenance, and cross-border logistics, that mobility has direct career value: it lets you follow work (or a better wage) across provincial lines without starting your paperwork over.
The Red Seal endorsement also feeds into federal immigration pathways, since NOC 72410 is a recognized skilled-trade occupation under the Federal Skilled Trades Program. None of this changes how you study, but it explains why the 135-question, 70%-cut IP exam is worth treating as a career-defining sitting rather than just another test.
A study group tells you the Red Seal Truck and Transport Mechanic exam has 150 questions because that is what an older weightings document says. Which source should you trust for the current question count?
You are studying in Ontario and keep seeing the trade called 'Truck and Coach Technician' in local materials, but your national Red Seal study guide says 'Truck and Transport Mechanic.' What is the correct explanation?
What score do you need to pass the Red Seal Truck and Transport Mechanic interprovincial exam, and roughly how much can you miss on 135 questions?
Why does earning the Red Seal endorsement matter beyond simply passing a certification exam?