Environmental issues questions LGV theory test
This topic has 51 practice questions. Here are 10 of them with the right answer and why.
Your lorry has been fitted with wind deflectors. How will they affect your vehicle?
- They'll increase the fuel consumption
- They'll reduce the stability
- They'll require increased tyre pressures
- They'll reduce the wind resistanceRight answer
Wind deflectors direct the wind either around or over your vehicle, so reducing the wind resistance. The vehicle then requires less power to make progress against the wind, and so will use less fuel.
What can cab-mounted wind deflectors reduce?
- Journey times
- Load capacity
- Tyre wear
- Fuel consumptionRight answer
A wind deflector redirects the air flow around the vehicle. This reduces the amount of energy required to drive the vehicle forward and so saves fuel.
How could you reduce your lorry's fuel consumption?
- Fit new brake linings
- Fit a high-level exhaust pipe
- Fit a larger fuel tank
- Fit wind deflectorsRight answer
Wind deflectors reduce a vehicle's wind resistance and so help reduce fuel consumption.
You're a driver who's certified to carry dangerous goods. How long is your certificate valid?
- One year
- 2 years
- 5 yearsRight answer
- 10 years
The operator of a UK-registered vehicle engaged in the carriage of dangerous goods should make sure that the driver has a valid vocational training certificate. These certificates are valid for 5 years.
What would help to reduce the impact that your lorry has on the environment?
- Driving through town centres
- Braking in good timeRight answer
- Planning routes to avoid motorways
- Racing to make up time
Noise, vibration, exhaust emissions and fuel consumption all contribute to the environmental impact made by a lorry. Good anticipation and forward planning will help to reduce these effects. Braking in good time saves fuel and so helps reduce exhaust emissions. It also helps reduce wear on the vehicle, its tyres and the road surface.
What's reduced by fitting a fly sheet tightly over a tipper body?
- Drag effectRight answer
- Steering effort
- Legal load weight
- Load capacity
Drag is caused by wind entering the cavity of an uncovered tipper. If the cavity is covered, then the drag is reduced.
How could you reduce the fuel consumption of your lorry?
- Brake late as often as you can
- Fit a cab-mounted wind deflectorRight answer
- Avoid sheeting any bulky loads
- Try to increase your overall speed
Wind deflectors lower a vehicle's wind resistance. The vehicle therefore requires less energy to drive it forward, and this reduces its fuel consumption. Fuel-efficient driving techniques, correct tyre pressures and proper maintenance all help to maximise fuel efficiency.
When may red diesel be used?
- For operators to reduce running costs
- For authorised purposes onlyRight answer
- For garages to test-drive repaired vehicles
- For environmental purposes
Red diesel is subject to less excise duty than standard diesel, so it's considerably cheaper. It may only be used for authorised purposes. Any driver whose vehicle is found to be using this fuel illegally faces penalties.
You're driving a lorry with a loaded skip. Why should the skip be covered with a net?
- To prevent rubbish from falling out of itRight answer
- To protect the contents from the weather
- To make it more visible to other traffic
- To stop others from adding to the load
If the load’s not covered, rubbish can be blown onto the carriageway. This can cause danger for other road users, as well as environmental damage. It may also lead to legal action against both the driver and the operator.
What must you do when you park a lorry weighing more than 7.5 tonnes on a verge for essential loading?
- Sign the collection note
- Display an orange badge
- Obtain the owner's permission
- Make sure the lorry is always attendedRight answer
Goods vehicles with a maximum authorised mass of more than 7.5 tonnes (including any trailer) must not be parked on a verge without police permission. The only exception is when this is essential for loading and unloading. In these cases, the vehicle must not be left unattended.