Class 1 Licence and Knowledge Test Requirements (Saskatchewan)
What the Class 1 knowledge test measures
SGI's Class 1 knowledge test is the entry gate for operating a tractor-trailer in Saskatchewan. It is a multiple-choice, computer-scored exam written at an SGI issuing office. The question bank draws on Saskatchewan's professional-driver material, not only the light-vehicle Driver's Handbook, so expect rules of the road plus heavy-truck content: pre-trip inspection, air-brake theory, hours of service, cargo securement, weight and dimension limits, and emergency handling.
Eligibility before you write
- Be at least 18 years old.
- Hold a valid Saskatchewan Class 5 (or an accepted equivalent), not a learner's licence.
- Meet vision and medical standards; Class 1 requires a completed medical examination report.
- If the vehicle has air brakes, you also need the air-brake endorsement, which has its own knowledge test.
After passing, you may be issued a Class 1 learner's licence so you can practise under the supervision of a qualified Class 1 driver before booking the road test.
Worked example
A 20-year-old holds a Class 5 and wants to drive a highway tractor. He studies only the Class 5 handbook, writes the test, and fails on air-brake and hours-of-service questions. The fix is not more car practice: he must study the professional-driver sections, complete the medical report, and write the air-brake test before booking a tractor-trailer road test. The knowledge test is checking truck-specific competence, not repeating the car test.
Traps that cost marks
- Assuming a Class 1 automatically includes air brakes - the endorsement is separate.
- Booking a road test before the knowledge test and medical are cleared.
- Treating an out-of-province licence as an automatic transfer; SGI still applies its own knowledge and medical review.
- Memorizing sign shapes only; the Class 1 bank tests load, weight, and inspection rules.