Question

write a detailed note on class railway and its classification and not classification​

Answer 1

Answer:

Explanation:

Railway stations can broadly be sorted into various classes on the basis of two main considerations.

 

Operational considerations

 

As per the general and subsidiary rules of Indian Railways stations are classified as block stations and non-block stations. Block stations are further classified as A class, B class, and C class stations. Non-block stations are classified as D class or flag stations.

 

Functional considerations

 

Stations are classified based on the functions they are required to perform. Under this category, stations are classified as halt stations, flag stations, crossing stations or wayside stations, junction stations, and terminal stations.

The following factors are taken into consideration when classifying a railway station.

 

(a)  Least expenditure with regard to the provision of the least number of signals

 

(b) Flexibility in shunting operations

 

(c)  Increasing the line capacity

 

(d) Faster movement of trains

 

 

1 Block Stations

 

A block station is a station at which the driver has to obtain an 'authority to proceed' in order to enter the next block section. In a railway system that is inclusive of block stations, the entire railway line is divided into convenient block sections of 5 to 10 km and a block station is provided at the end of each block. This system ensures that a suitable 'space interval' is provided between running trains so that there are no collisions and accidents. There are three types of block stations.

 

A class station

 

A class stations are normally provided on double-line sections. At such stations a 'line clear' signal cannot be granted at the rear of a station unless the line on which a train is to be received is clear and the facing points set and locked. No shunting can be done after line clear has been granted.

 

A class stations are suitable for sections where traffic passes rapidly. It is essential for the driver of the train to have an advance knowledge of the layout of the block station. The typical layout of an A class station with two-aspect signalling is shown in Fig. 26.1.