Metro train services in many parts of the country take advantage of LA in today's time. Metro services have also been introduced in many cities, which also benefit a lot. But we're going to tell you a lot of things that you might not have thought of or didn't know. It takes less time as the fares are economical. For Delhi, the Metro is considered a lifeline because the day the Metro stops, Delhi stops. You have noticed that every metro station also has a yellow line made of yellow tiles. There are very important reasons behind this that you can find out here. also read The Pregnant lady can also keep her look stylish in such ways Whenever you're waiting for a metro, you've heard an account saying 'please stand behind the yellow line' for security reasons. The Metro platform has a yellow line. In addition, you'll see yellow tiles from the entry of the metro station to the queue and to the platform. At the metro station, these yellow tiles are tactile pavements, which are used to protect and help blind people. They help the blind to walk on them and find the way with the help of their stick. If you didn't even understand the meaning of this yellow line till today, make sure that you travel in the Delhi Metro now. Never walk on this line anymore. Let the people who need it run on this line. also read Bangladesh’s ‘tree man’ wants hands amputated: Everything to know about the rare disease