ICBC Commercial Knowledge Test Practice (Class 1–4)
Free · 220 Questions.

• Required of all new Class 1 applicants since October 18, 2021, and taken once
• Required of all new Class 3 applicants before their road test, and taken once
• Required of all new Class 1 applicants, and repeated each time the licence is renewed
• Optional for new Class 1 applicants who already hold an air brake endorsement

Why: MELT became a legislated requirement for all new Class 1 applicants on October 18, 2021. Once you have taken it, it is a one-time requirement and does not need to be repeated. It also covers air brake training.

• Five seconds
• Two seconds
• Three seconds
• Eight seconds

Why: Because you need more time and distance to stop, keep at least a five-second following distance in a bus, truck or other heavy vehicle. Increase it when conditions are less than ideal.

• It increases to four times
• It increases to twice
• It increases to three times
• It increases to eight times

Why: Doubling vehicle speed requires four times the stopping power. Doubling weight requires twice the stopping power, and doubling both requires eight times.

• 36 hours for Cycle 1 and 72 hours for Cycle 2
• 24 hours for Cycle 1 and 48 hours for Cycle 2
• 34 hours for Cycle 1 and 34 hours for Cycle 2
• 72 hours for Cycle 1 and 36 hours for Cycle 2

Why: You can reset a cycle at any time by taking 36 consecutive hours off duty for Cycle 1, or 72 consecutive hours off duty for Cycle 2. The start time of a cycle stays the same until you reset it.

• 3,000 pounds
• 300 pounds
• 30 pounds
• 30,000 pounds

Why: Pushrod force depends on air pressure and the effective diaphragm area. A Type 30 chamber has 30 square inches of effective diaphragm area, so at 100 p.s.i. it develops a pushrod force of 3,000 pounds. Normal stops use much lower application pressure, usually less than 20 p.s.i.