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Different Types of Railway Services and Their Characteristics
Types of Railway Services (Classification of Traction Services)
Railways offer the following three types of the passenger traction services viz −
City or Urban Service
Suburban Service
Main Line Service
City or Urban Railway Service
In the city or urban railway service, there are frequent stops, the distance between these stops being nearly 1 km or less. Therefore, in order to obtain moderately high schedule speed between the stations, it is essential to have high acceleration and retardation.
Suburban Railway Service
In case suburban railway service, the average distance between the stops ranges from 3 km to 5 km. The suburban railway services require rapid acceleration and retardation for frequent starting and stopping.
Main Line Railway Service
In the main line railway service, the operation is over long routes and stops are infrequent. In this types of railway service, the operating speed is high and acceleration and retardation period are relatively less important.
Note - The three types of traction services are also available on goods traffic side, which are −
Main Line Freight Service
Local or Pickup Freight Service
Shunting Service
Characteristics of Railway Services
The following table highlights the characteristics of various types of railway services −
| Characteristic | City or Urban Railway Service | Suburban Railway Service | Main Line Railway Service |
|---|---|---|---|
| Acceleration | 1.5 to 4.0 kmphps | 1.5 to 4.0 kmphps | 0.6 to 0.8 kmphps |
| Retardation | 3 to 4 kmphps | 3 to 4 kmphps | 1.5 kmphps |
| Maximum speed | 120 kmph | 120 kmph | 160 kmph |
| Distance between stations | Up to 1 km | 1 to 8 km | More than 10 km |
| Running & coasting periods | No free running period. Small coasting period. | No free running period. Long coasting period. | Free running period. Long coasting period. Relatively small acceleration and braking periods. |
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