MLA Citation: Bloomfield, Louis A. "Question 166"
How Everything Works 23 Jul 2018. 23 Jul 2018 <http://howeverythingworks.org/print1.php?QNum=166>.
166. Why do many buses use air brakes instead of hydraulic brakes?
As you have noticed, buses, trucks, and trains often use air as the hydraulic fluid in their braking systems. That's because air is cheap and non-toxic, so that spilling it isn't a problem. While air's compressibility makes it a bit more complicated to work with than a liquid hydraulic fluid, it still works well in power braking systems.

Return to HowEverythingWork.org
Generated for printing on Monday, July 23, 2018 at 13:28:23 EDT
Copyright 1997-2018 © Louis A. Bloomfield, All Rights Reserved
Privacy Policy