Skip to main content
Automatic Warning System. Device used in locomotives of the British Railways network in the early 1950s. Worked by permanent and electromagnets, it sounds a bell in the cab if the signal is green (or semaphore distant signal clear) and a horn if the signal is double yellow, single yellow, or red (or semaphore distant signal at caution).

When the horn sounds, the driver has about 3 seconds to press the cancelling button or the brakes will apply.

Newer versions of the system are now in operation (ATP and TPWS) but the principle is much the same and helps to prevent a SPAD. (Signal passed at danger).
This line had AWS equipment fitted 48 years ago and it is still in use today.
AWS by Kev in hants September 15, 2007
Related Words
It is short for being the ebola in your life. It is a very tragic person in your life. He is also seceretly gay but he's too much of a wamp to accept it.

It is said that it means "wolf" or "awesome" but none of those are true, in fact it is short for "Anal Wage Sandwich".
" Ay, that was too Aws"
"This thing I did in the toilet was the biggest Aws ever!!111!"
"So i met this girl, she was such an Aws."
Aws by NorweiganSandwich.com January 26, 2017
Hey works for AWS.. so he is an asshole
AWS by Sangpa August 21, 2019
a person with the most twisted sense of humor that u can never leave or hell haunt u in your dreams
you’re such an aws
aws by localshawty July 12, 2021
any guy with this name is future dilf material tbh 💯
abood: “who’s underwear is this ??”

aboods wife: “sorry babe… i couldn’t help it his name was aws..”
Aws by yespancakeseggs November 20, 2021
Aws is a perm boy with the most best smile which gets no females
Yo is that aws he’s gay
Aws by Awas January 25, 2022