Quote Originally Posted by jut703 View Post
Just curious, what do you call that device that quite a lot of jeepneys have, which make a tweeting sound when they step on the brakes?

It's sounds sort of like a Blow-off Valve, without the air so it's mostly just a whistling high-pitched sound. Anyone know what it's called and how it works?
Sound siren lang yun boss. Meron nga sa motor niyan. Hindi air yan, electrical lang. Burloloy!