NR NR/L2/TRK/001/MOD18 ISSUE 7 PDF

This module of NR/L2/TRK/001 and the associated TEF 3028 applies to: 

a) Fixed buffer stops; 

b) Sliding/friction buffer stops; 

c) Hydraulic buffer stops; 

d) Combined friction/hydraulic buffer stop; 

e) Sand drags; and 

f) Those who assess the risk from rail vehicles overrunning a buffer stop. 

Note: Design and Installation requirements are incorporated within NR/L2/TRK/2102 Design and Construction of Track.

Purpose of a Buffer Stop 

The purpose of a buffer stop is:

a) to identify the “Limit of Movement Authority” to the driver of a rail vehicle.

b) to dissipate energy and arrest the movement of a rail vehicle which passes the Limit of Movement Authority;

c) to protect passengers and train crew in the event of an overrun of a terminal line;

d) protect staff, members of the public, and structures within the buffer stop Overrun Risk Zone from the effect of an overrun of a terminal line; and

e) protect trains on adjacent running lines in the event of an overrun of a terminal line.