Energy-efficient transportation can help reduce air pollution, greenhouse gas emissions, and improve energy security by using less fuel.

Trains are the most energy-efficient mode of transportation because they can carry more people and goods per unit of energy than other modes of transportation.

Diesel vehicles are not energy-efficient because they use more fuel than hybrid, electric, or fuel-efficient gasoline vehicles.

Hybrid vehicles can travel longer distances on a single tank of fuel because they use a combination of gasoline and electric power.

Electric vehicles produce zero emissions because they do not use gasoline or other fossil fuels.

Electric vehicles face a number of challenges to widespread adoption, including high cost, lack of charging infrastructure, and limited driving range.

All of the above driving techniques can help improve fuel efficiency.

The recommended tire pressure for most passenger vehicles is 35 psi.

Using the seat heaters is the most energy-efficient way to heat a car in the winter because they use less energy than the other options.

Parking in the shade is the most energy-efficient way to cool a car in the summer because it prevents the car from heating up in the sun.

Transporting goods by ship is the most energy-efficient way because ships can carry more goods per unit of energy than other modes of transportation.

Commuting to work by bicycle is the most energy-efficient way because it does not require any fuel.

Traveling long distances by train is the most energy-efficient way because trains can carry more people and goods per unit of energy than other modes of transportation.

Walking is the most energy-efficient way to travel short distances because it does not require any fuel.

Traveling medium distances by bus is the most energy-efficient way because buses can carry more people per unit of energy than cars.