Streamlined trains are designed with a focus on reducing air resistance, allowing them to travel faster and more efficiently. Their sleek, aerodynamic shapes help minimize drag, which is the force that opposes their motion. This design not only enhances speed but also improves fuel efficiency, making them more environmentally friendly. These trains often feature modern technology and comfortable interiors, providing a better travel experience for passengers. Examples of streamlined trains include the Shinkansen in Japan and the TGV in France, both known for their high speeds and punctuality. Streamlined trains represent a significant advancement in rail transportation.