What can reduce the fuel consumption of a commercial vehicle?

Your answer is correct. To reduce the fuel consumption of a commercial vehicle, several factors come into play. First, fitting air cowls to the vehicle improves aerodynamics by reducing air resistance, which helps the vehicle move more efficiently and consume less fuel. Second, the farsighted driving style of the driver—meaning anticipating traffic conditions, avoiding unnecessary acceleration and braking—allows smoother driving, which saves fuel. Third, using special tyres designed to reduce rolling resistance can also lower fuel consumption. Together, these measures contribute significantly to making commercial vehicles more fuel-efficient according to German traffic rules.