It consists exclusively of loose-coupled open mineral wagons and a guard's brake van; owing to the isolation of the branch the last-named is equipped with a first aid box and a jack, to enable any emergency to be dealt with rapidly.
Source: wiktionary
The line here rises in the up direction, for the most part on a 1 in 132 gradient, and three spring-operated catch points—Basildon West, Basildon and Vange—are provided at intervals on the up line between the two stations, to derail any runaway wagons of a loose-coupled freight train.
Source: wiktionary