Latest updates to standards

Rule Book module SP section 2.2 sets out speed restrictions that apply to all locomotive-hauled coaching stock. The section is being updated as it refers to marks 1, 2 and 3 coaching stock and is therefore out of date.

Some older types of locomotive do not have enough braking power, and the braking power of a number of coaches is also necessary to operate at normal permissible speeds. More modern locomotives have increased braking power that does not require a reduction in speed.  If the train operator has confirmed that the class of locomotive does have sufficient braking power, it can issue the instructions that the speed restrictions do not apply to those train formations. 

Rule Book module TW1 section 4.4 sets out speed restrictions that must be applied when vehicles within the train have isolated brakes.

Some modern types of multiple unit have a braking system that automatically increasing the braking force on the remaining vehicles to compensate for the vehicles which have isolated brakes. If a train operator can confirm that the multiple units have this type of brake, it can issue instructions that the speed restriction does not have to be applied.

Rule Book module SS2 section 4.2 was changed in the June 2021 Periodical Operating Notice. The practice of pushing through trailing hand points is a long-standing one, but an increasing number of points now have a locking mechanism which means that damage can be caused. The Rule was changed so that the position of all points, both facing and trailing, must be checked before making a shunting movement.

However, at some locations there are hand points that can be pushed through without damage, and the rule has been changed again to say that it is not necessary to check the position of all the points, if there are local instructions that allow this.