block system

American  

noun

Railroads.

1. a series of consecutive blocks.

2. a system of blocks and block signals for controlling train movements.

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Etymology

Origin of block system

First recorded in 1860–65

Example Sentences

But people we spoke to have described struggling to get online to access the system, as well as finding the block system difficult to understand, notwithstanding the errors.

From BBC

The vast majority made reference to the master block system.

From BBC

BBC analysis has also found the IDF's block system overall was used inconsistently.

From BBC

We have focused our analysis on warnings issued since 1 December, which is when the IDF launched its block system as a way of providing more precise instructions than previously, after coming under international pressure.

From BBC

Vernon, Iowa, student exposure to infection is naturally limited by the school’s “block” system of classes, in which students study one subject at a time in groups of 15 for periods of three and a half weeks.

From New York Times