Environmental Awareness and Fuel Efficiency Flashcards

How does gear selection affect the fuel efficiency of a diesel bus?

Answer: Using the highest appropriate gear reduces engine RPM and fuel consumption

Selecting the highest gear appropriate for the speed and load reduces engine RPM, lowering fuel consumption.

Which of the following correctly explains how a driver's behaviour contributes to a bus operator's carbon footprint?

Answer: Driver behaviour accounts for up to 30% variation in fuel consumption for the same vehicle and route, directly affecting CO2 output

Driver behaviour can cause up to 30% variation in fuel consumption, making it a major factor in a fleet's carbon footprint.

What is the purpose of a Bus Emission Reduction Strategy at an operator level?

Answer: To systematically reduce exhaust emissions by upgrading the fleet, training drivers, and optimising routes

An emission reduction strategy combines fleet upgrades, eco-driver training, and route optimisation to systematically cut emissions.

What is 'start-stop' technology in the context of bus engine management?

Answer: A system that automatically shuts down and restarts the engine during prolonged stops to save fuel

Start-stop technology automatically shuts off the engine at stops and restarts it when the driver is ready to move, reducing idling fuel use.

A driver notices the bus's fuel consumption has increased noticeably over the past week. What should they do?

Answer: Report it to the operator as it may indicate a mechanical fault such as injector or tyre pressure issues

A sudden increase in fuel consumption can signal a mechanical fault and must be reported to the operator for investigation.

Under which regulation are UK bus operators required to report their greenhouse gas emissions?

Answer: The Streamlined Energy and Carbon Reporting (SECR) framework for large operators

Large UK bus operators are required to report energy use and greenhouse gas emissions under the SECR framework.