Loop Line in Railway?
When a branch line leaves from a mainline and again this branch line terminates at the same mainline later, it is called a loop line. The main purpose of providing a loop line is to provide a bypass route. It helps to pass the fast-moving trains on time. The arrangement of the loop line can be either of the following types:
- Split turnout
- Trailing turnout
- Straight and loop
➤ A split turnout is not suitable for fast-moving trains as they have to reduce their speed while nearing the facing points. Therefore, the use of split turnout is unacceptable when considering fast-moving trains.
➤ A trailing turnout is less objectionable as compared to a split turnout because there is a slight reduction in the speed of fast trains while leaving over a reverse curve.
➤ When considering fast through trains, straight and loop arrangement is always acceptable because there is no reduction in speed. Additional loops and other facilities are provided whenever needed.
Video of Railway Loop Line