SINCE 1828
lock-and-block system
nounDefinition of lock-and-block system
British
: a railway block system in which the signals permitting a train to enter a block are locked while a train is in the block and automatically unlocked as it leaves the block
Comments on lock-and-block system
What made you want to look up lock-and-block system? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
What did you just call me?! A Quiz
-
- If a member of the audience describes your speech as bombastic, does that person mean it is:
Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZ
Share lock-and-block system
Resources for lock-and-block system