Types Of Level Crossings Used In Railway – Classification Of Level Crossing


What Is Level Crossing?

The place where a railway line and a road cross each other is called level crossing.


Types Of Level Crossings:

The various types of level crossings may be classified depending upon the nature of the ground, nature of the traffic on road and number of trains passing over the level crossing.

1. Special class level crossing.

2. Class “A” level crossing.

3. Class “B” level crossing.

4. Class “C” level crossing.

5. Class “D” level crossing.

1. Special Class Level Crossing:

This type of level crossing is provided on very important through roads where the traffic is exceptionally heavy, to suit the individual site conditions. The design of such a level crossing is not according to the rules as given for other types of level crossings.

2. Class “A” Level Crossing.:

These crossings provided on G.T roads.

Requirements:

1. The roads meeting at these level crossings should be straight at least for 30 m on either side of the railway line.

2. The angle of crossing should be 90° but in no case less than 45°.

3. The minimum radius of curvature for approaches on either side should be 45 m and their maximum gradient be in 1 in 30.

4. A level length of at least 7.5 m to act as a platform for waiting of vehicles beyond each gate should be provided.

5. The minimum gate width should be 7.3 m which are all paved.

6. The gates should be at angles to the center line of the road on either side.

7. No part of the gate should be within 2.1 m of distance from the centerline of the adjacent track.

8. The view of level crossing should be clear from approach roads.

9. Minimum two watchmen should be deputed to take care of such level crossings.

10. The huts of watchmen should neither be on road formation nor should they obstruct the clear view of level crossings. the nearest edge of the watchmen cabin should be minimum 6m.

3. Class “B” Level Crossing:

The level crossings provided on metalled roads of district level are known as Class “B” level crossings.

Requirements:

1. Minimum gate width should be 3.7 m.

2. Minimum radius for approach road on either side of the crossing should be 30 m.

3. Minimum one watchmen should be deputed to take care of this level crossing.

4. Class “C” Level Crossing:

The level crossings provided on unmetalled roads are called class “C” level crossing.

Requirements:

1 The minimum gate width should be 3.7 m.

2 A least a level road length of 7.5 m on either side of the crossing should be provided.

3 The road portion should be metalled up to 2.7 m beyond the position of gates on either side of the crossing.

5. Class “D” Level  Crossing:

The level crossings in the form of ramps provided at inlet into the railway fencing for pedestrians and cattle to pass are called as class “D” level crossings.

Recommended Dimensions For Different Types Of level Crossings:

Serial No. Class Of Level Crossing Width Of Gates In m Minimum Radius Of Approach Road in m (Within 45m) Maximum Gradient Of Approaches
1. Special Class 7.1 to 9.1 60 1 in 40
2. Class “A” 7.3 45 1 in 30
3. Class “B” 3.7 30 1 in 30
4. Class “C” 3.7 21 1 in 20
5. Class “D” 1.8 76 1 in 10
Also Read – Types Of Sleepers Used In Railway Line.

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