Viewing a single comment thread. View all comments

frankybling t1_is6iers wrote on October 13, 2022 at 5:34 PM

Reply to comment by zeydey in Mysterious boop sound in Cambridgeport by relationship-nerd

they use them for hearing impaired people, but they also work for people who have their car stereos up too loud to hear normal sirens (but the origins purpose was for the hearing impaired)