What can reduce the fuel consumption of a commercial vehicle?

The combination of choices provided is effective in reducing fuel consumption for commercial vehicles due to several factors.

1. Fitting air cowls can improve aerodynamics, helping the vehicle cut through the air more efficiently and thus reducing drag, which leads to lower fuel consumption. This aligns with regulations aimed at promoting environmental sustainability and efficiency in transport.

2. A farsighted driving style, which includes anticipating traffic conditions and smooth acceleration and braking, helps maintain a steady speed. This can prevent unnecessary fuel consumption from frequent stops and starts, which is encouraged by safe driving regulations in Germany.

3. The use of special tyres, such as those designed for low rolling resistance, can also significantly diminish fuel consumption. German vehicular regulations emphasize the importance of using appropriate tyres that not only enhance safety but also improve fuel efficiency.

Overall, all three elements work together to create a more fuel-efficient vehicle operation, which is in line with the principles of eco-friendly driving promoted by traffic guidelines in Germany.