B.C. Class 1 Knowledge Practice Test 2026：第2套练习测试

B.C. Class 1 Knowledge Practice Test 练习测试第2套（共5套）：再练25道题，附答案和解释。

商用车辆
不列颠哥伦比亚省
130道题
核对于2026年10月10日

第1题，共25题
You miss a road test appointment without 48 hours' notice or a valid reason. What happens?
- You lose your licence
- You must retake MELT
- Nothing
- You pay a fee
显示答案
答案: D. You pay a fee
Missing an appointment without 48 hours' notice or a valid reason costs a fee.
第2题，共25题
You take your Class 1 road test in a truck with an automatic transmission. What happens?
- You must retake the test in a manual within 7 days
- Nothing; there is no restriction for automatics
- Your licence is restricted to automatic transmissions
- You may only drive the truck in daylight
显示答案
答案: C. Your licence is restricted to automatic transmissions
Taking a Class 1 to 3 test in an automatic vehicle restricts the licence to automatic transmissions.
第3题，共25题
You fail your first Class 1 road test in B.C. How long must you wait to retest?
- 60 days
- 7 days
- 14 days
- 1 day
显示答案
答案: C. 14 days
After a first failed Class 1 to 4 road test, the wait is 14 days. After the second, it is 30 days.
第4题，共25题
You fail the Class 1 road test for the second time. How long must you wait?
- 14 days
- 90 days
- 30 days
- 7 days
显示答案
答案: C. 30 days
The waiting period after a second failed Class 1 to 4 road test is 30 days.
第5题，共25题
Who completes the Driver's Medical Examination form for a B.C. commercial licence?
- The trucking company that hires the driver
- The road test examiner on the day of the test
- A B.C.-licensed doctor, who sends it to RoadSafetyBC
- The driver fills it in and signs it
显示答案
答案: C. A B.C.-licensed doctor, who sends it to RoadSafetyBC
A B.C.-licensed doctor completes the form and sends it to RoadSafetyBC.
第6题，共25题
After age 45, how often are routine medical reports due for commercial drivers in B.C., until age 63?
- Every 3 years
- Every 10 years
- Every 5 years
- Every year
显示答案
答案: A. Every 3 years
Routine reports are due at 45, 48, 51, 54, 57, 60 and 63.
第7题，共25题
From what age must B.C. commercial drivers file a medical report every year?
- 66
- 75
- 55
- 45
显示答案
答案: A. 66
Routine medical reports become yearly from age 66.
第8题，共25题
What code on a B.C. licence shows an air brake endorsement?
- Code 15
- Code 1
- Code 20
- Code 99
显示答案
答案: A. Code 15
The air brake endorsement is code 15.
第9题，共25题
What does the heavy trailer endorsement (code 20) allow?
- Carrying dangerous goods in any trailer
- Class 4 or 5 drivers towing over 4,600 kg with no air brakes
- Driving semi-trailers that have air brakes
- Driving any bus with only a Class 5 licence
显示答案
答案: B. Class 4 or 5 drivers towing over 4,600 kg with no air brakes
Code 20 lets Class 4 or 5 drivers tow trailers over 4,600 kg when neither the truck nor trailer has air brakes.
第10题，共25题
You want to upgrade from Class 3 to Class 1. What must you do?
- Take only a vision test and a medical
- Just pay a fee at a driver licensing office
- Follow all the Class 1 steps, including a learner's licence
- Nothing; a Class 3 licence includes Class 1
显示答案
答案: C. Follow all the Class 1 steps, including a learner's licence
Upgrading means completing every step for the new class.
第11题，共25题
Under the National Safety Code, when must a pre-trip inspection be done?
- Only before a road test with ICBC
- Every 1,000 km driven
- Once a week, on the first working day
- Before the first run of each day
显示答案
答案: D. Before the first run of each day
A pre-trip inspection must be done before the first run of each day.
第12题，共25题
This diagram shows common walk-around inspection points. What do you check at the coupling area?
- The fuel price
- The radio and the seats
- The fifth wheel and the air and electrical lines
- The tire tread on the steering axle only
显示答案
答案: C. The fifth wheel and the air and electrical lines
At the coupling area, check the fifth wheel and the air and electrical connections.
第13题，共25题
About how long is the average driver's perception time?
- About three-quarters of a second
- About 3 seconds
- About one-tenth of a second
- About 10 seconds
显示答案
答案: A. About three-quarters of a second
Perception time is about 3/4 of a second, and reaction time is about another 3/4 of a second.
第14题，共25题
About how long is air brake lag time?
- About four-tenths of a second
- There is no lag
- About 4 seconds
- About one-hundredth of a second
显示答案
答案: A. About four-tenths of a second
Air brakes take about 4/10 of a second to apply after you press the pedal.
第15题，共25题
How much following distance should truck and bus drivers keep at highway speeds?
- At least five seconds
- At least one second
- At least two seconds
- At least ten metres
显示答案
答案: A. At least five seconds
Heavy vehicle drivers should keep at least five seconds of following distance at highway speeds.
第16题，共25题
If you double your speed, how much more stopping power do you need?
- Eight times as much
- The same
- Four times as much
- Twice as much
显示答案
答案: C. Four times as much
Doubling speed requires four times the stopping power.
第17题，共25题
If you double the weight of your vehicle, how much more stopping power do you need?
- Four times as much
- The same
- Eight times as much
- Twice as much
显示答案
答案: D. Twice as much
Doubling weight requires twice the stopping power.
第18题，共25题
If you double both speed and weight, how much more stopping power do you need?
- Four times as much
- Twice as much
- Sixteen times as much
- Eight times as much
显示答案
答案: D. Eight times as much
Doubling both speed and weight requires eight times the stopping power.
第19题，共25题
A loaded tractor-trailer can weigh up to about how much?
- 63,500 kg
- 100,000 kg
- 25,000 kg
- 6,350 kg
显示答案
答案: A. 63,500 kg
A loaded tractor-trailer can weigh up to about 63,500 kg.
第20题，共25题
About how far may a loaded tractor-trailer need to reach 100 km/h?
- About 50 m
- More than 1 km
- About 200 m
- About 500 m
显示答案
答案: B. More than 1 km
A heavy tractor-trailer may need over 1 km and over 1 minute to reach 100 km/h. Allow for this when merging or crossing.
第21题，共25题
About how hot do brake parts get in normal stopping?
- About 1,000 °C
- About 500 °C
- About 20 °C
- About 120 °C
显示答案
答案: D. About 120 °C
Normal stopping heats brake parts to about 120 °C.
第22题，共25题
What brake temperature should not be exceeded?
- About 250 °C
- About 100 °C
- About 50 °C
- About 1,500 °C
显示答案
答案: A. About 250 °C
Brake parts can handle up to about 250 °C and should not go higher.
第23题，共25题
Which of these is one of the four main types of retarder?
- Tire retarder
- Steering retarder
- Exhaust retarder
- Mirror retarder
显示答案
答案: C. Exhaust retarder
The four main types are engine, exhaust, hydraulic driveline and electric driveline retarders.
第24题，共25题
When do engine retarders work best?
- Only once the service brakes are already hot
- At low rpm in top gear on a downgrade
- In neutral, with the clutch held down
- At higher rpm and lower road speed, in a gear chosen early
显示答案
答案: D. At higher rpm and lower road speed, in a gear chosen early
Engine retarders work best at higher rpm and lower road speed. Pick the gear before starting down.
第25题，共25题
On a downgrade your speed rises above your chosen safe speed. What should you do?
- Shift down using the splitter valve only
- Brake to cut 10 to 15 km/h, then shift to a lower main gear
- Keep light pressure on the brakes all the way down
- Shift to neutral and use the brakes at the bottom
显示答案
答案: B. Brake to cut 10 to 15 km/h, then shift to a lower main gear
While the brakes are still cool, brake hard enough to drop 10 to 15 km/h, then downshift to a lower main gear, not the splitter.

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