Which two of the labelled features could be said to make this vehicle more “environmentally friendly”?

Explanation: • The tear-drop shape to the trailer and the wind deflector on the cab roof helps deflect the wind more smoothly over the cab roof towards the semi-trailer, thereby reducing drag and improving fuel consumption.
• The lift axle raises when there is less weight over this part of the tractor unit {e.g. when the semi-trailer is lightly laden or empty, thus reducing drag and improving fuel consumption and also reduces tyre wear and the need for more frequent tyre replacement.
• The under-run protection and flexible curtain-side sheeting do not improve fuel consumption.

Category: CPC Case Studies: EcoSafe Driving