Dimensions of Level Crossings

Some of the important dimensions of square A class and B class level crossings are given in Table 23.1. It may be mentioned here that the angle of crossing between the centre line of the railway and the road should not be less than 45°.

Table 23.1 Dimensions of A class and B class level crossings

Description of item

A class level crossing on a class-I road

B class level crossing on a class-II road

Maximum width of gates

9 m

7.5 m

Minimum length of guard rails

11 m

9.5 m

Position of gates when open to road traffic

Always from or towards, but not across, the line

Same as A class

Maximum distance of gate post from the centre line of the track

3 m

3 m

Maximum distance of gate lodge from the centre line of the nearest track

6 m

6 m

Minimum width of metalled road

Same as the width of the

Same as the width of

between gates Level and gradients

gate

the gate

(a) between gates

Level

Level

(b) beyond gates

Level up to a distance of 8 m; a grade of 1 in 30 beyond that

Level up to a distance of 8 m; a grade of 1 in 20 beyond that

Minimum length of road outside the gates

22.5 m

15 m

Minimum fencing on lines parallel to the track

15 m

15 m

Provision of light indicators at the gates for the benefit of road users

Red when the gate is closed and white when it is open to road traffic

Same as A class

Classification of Level Crossings | RAILWAY ENGINEERING - Contents | Accidents at Level Crossings and Remedial Measures