CPC Eco-Driving

Question 1

What is the most fuel-efficient way to accelerate in an HGV?

Accepted Answer

Accelerate smoothly and progressively, using the green band on the rev counter

Answer

Accelerate as quickly as possible to reach cruising speed

Answer

Use the lowest gear and highest revs

Answer

Alternate between accelerating and coasting

Question 2

How does anticipating traffic conditions ahead help reduce fuel consumption?

Accepted Answer

Reading the road ahead allows the driver to maintain momentum, reduce unnecessary braking and acceleration

Answer

It does not help with fuel consumption

Answer

It only helps reduce journey time

Answer

Anticipation is only useful for safety, not fuel saving

Question 3

What is the most fuel-efficient cruising speed for most HGVs?

Accepted Answer

Between 50-56 mph (the speed limiter range), as fuel consumption increases significantly above these speeds

Answer

As fast as legally possible

Answer

Below 30 mph at all times

Answer

It makes no difference what speed you travel at

Question 4

How does cruise control help with eco-driving?

Accepted Answer

It maintains a constant speed, preventing the driver from unconsciously varying speed, which wastes fuel

Answer

It does not help with fuel efficiency

Answer

It automatically changes gears for maximum power

Answer

It reduces engine temperature

Question 5

Why should unnecessary electrical loads be switched off to save fuel?

Accepted Answer

The alternator requires engine power to generate electricity — more electrical load means more fuel consumption

Answer

Electrical systems do not use fuel

Answer

Electrical systems use a separate battery that does not affect fuel

Answer

Only the headlights affect fuel consumption

Question 6

What is 'block gear changing' and how does it benefit fuel economy?

Accepted Answer

Skipping intermediate gears when changing up or down, keeping the engine in its efficient range

Answer

Changing gears only when the engine stalls

Answer

Never changing gear during a journey

Answer

Using the clutch without pressing the accelerator