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CPC Test

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You are driving a rigid lorry towing a trailer. The vehicle and trailer are heavily laden.
The roads are slippery in places with a mix of water and split diesel fuel and some of the roads are quite hilly. The vehicle has ABS, a retarder and a 2 speed rear axle and a 6 speed gear box.

There are 7 questions in this CPC test. Read the scenario carefully and ensure you understand it fully. You need to score at least 6 out of 7 to pass.

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1. Why will the 2 speed rear axle be useful today? Mark one answer
A It will give you a total of 10 gear ratios for use in the hills
B It will give you a total of 12 gear ratios for use in the hills
C It won't provide any particular benefit today
D The extra ratios will allow you to travel at a higher speed
Correct Answer: B It will give you a total of 12 gear ratios for use in the hills
2. As you descend the hills you notice that the rev counter is often in the blue band. What does his mean? Mark one answer
A That the engine is providing braking assistance
B That you are applying the footbrake
C That you need to brake harder
D That you need to get into the green band quickly
Correct Answer: A That the engine is providing braking assistance
3. Which of the following are true about retarders? Mark two answers
A Some use electro-mechanical devices
B They are controlled by the footbrake pedal
C They operate on the transmission system
D They operate on the wheels
Correct Answer: A Some use electro-mechanical devices, C They operate on the transmission system
4. Which of the following are true about ABS systems? Mark two answers
A By law, all heavy goods vehicles must be fitted with ABS
B They prevent the wheels from locking up when braking
C They use air pressure supplied by the service brakes to operate sensors
D They use electrically powered sensors
Correct Answer: B They prevent the wheels from locking up when braking, D They use electrically powered sensors
5. Rigid vehicles drawing trailers are sometimes known as: Mark two answers
A Articulated Lorries
B Drawbar combinations
C Rigid combinations
D Road trains
Correct Answer: B Drawbar combinations, D Road trains
6. Which of the following must you check before driving your vehicle and trailer combination to ensure that the trailer is safely attached? Mark two answers
A Air hoses
B Couplings
C The fifth wheel locking bar is correctly located
D The fifth wheel safety catch is correctly engaged
Correct Answer: A Air hoses, B Couplings
7. As you descend a steep hill on a wet road, you brake and feel a hammering coming from the brake pedal. What does this mean? Mark two answers
A The ABS is operating
B The brake discs need skimming
C The service brake has failed
D You will be able to steer while you are braking
Correct Answer: A The ABS is operating, D You will be able to steer while you are braking