Meaning of block system | Babel Free

Definitions

1. On railways, a system by which the track is divided into sections of three or four miles, and trains are run by the guidance of electric signals so that no train enters a section or block before the preceding train has left it.
2. Given a group G that acts on a set X, a partition of X that is G-invariant.

Examples

“Signalling was by the standard 'block⟳' system of the time, which prevents any two trains being on the same track section at once, but this was operated with boldness, with margins shaved. The Metropolitan would prove⟳ to have⟳ an excellent safety record⟳ nonetheless.”

CEFR level