Paragraph 57
The derailment of a non-passenger train—
(a)
on a running line, except a derailment during shunting operations which does not obstruct any other running line; or
(b)
in a siding, which causes an obstruction to a running line.
The derailment of a non-passenger train—
on a running line, except a derailment during shunting operations which does not obstruct any other running line; or
in a siding, which causes an obstruction to a running line.