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?

Yes sir, sa brake nga yun, bale kase modified na yung mga brake karamihan ng jeepneys natin, di siya hydrovac, D5 tawag sa brake system na yun, semi airbrake, sa malalaking truck nkakakabit yun pero yung jeepneys yun na gamit, kaya nagtweet yun kase nilagyan nilang hose yung exhaust ng valve, para maporma daw hehehe, alam mo yung hose ng electrical? yun nilalagay nila try mo hipan yung hose na yun ganun ang tunog nun, sa bigat kase ng body ng jeepney yun na gngamit nila na break system, malakas pa sa break ng car yun!